LESSON TITLE: Springs of Life

GRADE LEVEL: 5-8

TOPIC/SUBJECT MATTER: Life Science

TIME ALLOTMENT: Three to four 45-minute class periods

OVERVIEW:

In this video-enhanced lesson, students will explore Florida’s springs using video segments from the NATURE film “Springs Eternal: Florida’s Fountain of Youth” and related activities and discussions. Students will learn about how the springs are formed and will explore the Florida springs ecosystem, with particular focus on the manatees, fish, birds and alligators that live there. Students will also learn about red tide and its threat to the life in the springs. At the end of the lesson, students will conduct research and give a presentation about one species that lives in and/or around the springs.

MEDIA RESOURCES:

Video Clips

NATURE: “Springs Eternal: Florida’s Fountain of Youth

1. “Florida’s Springs”

2. “Life in Florida’s Springs”

3. “Red Tide”

4. “Life in the water supply”

Access the streaming and downloadable video segments for this lesson at the Video Segments Page.

Web Sites

Resources about Florida’s springs and the species living in and around them:

• Florida’s Springs: Protecting Nature’s Gems

This Web site contains information, photographs and educational resources about Florida’s springs. The following section is used in this lesson:

• Life in a Spring

This section includes information and photographs about the different plants and animals living in and around Florida’s springs.

• Web World Wonders/ Ecosystems: List of Organisms in the River and Springs Ecosystem

This site provides detailed information and photographs of species living in and around Florida’s rivers and springs.

• U.S. Fish & Wildlife Service: Species

This site contains “Wildlife Fact Sheets,” which include information about a variety of species, including the American Alligator and the West Indian Manatee who live in the springs.

• University of Delaware College of Marine and Earth Studies

This site contains information about eelgrass, as well as information and bird sounds of species including the Great Blue Heron and Osprey, which could be helpful for student research during this lesson.

Standards:

National Science Education Standards, Grades 5-8

LIFE SCIENCE: Content Standard C

As a result of their activities in grades 5-8, all students should develop understanding of

• Populations and Ecosystems

• A population consists of all individuals of a species that occur together at a given place and time. All populations living together and the physical factors with which they interact compose an ecosystem.
• Populations of organisms can be categorized by the function they serve in an ecosystem. Plants and some microorganisms are producers-they make their own food. All animals, including humans, are consumers, which obtain food by eating other organisms. Decomposers, primarily bacteria and fungi, are consumers that use waste materials and dead organisms for food. Food webs identify the relationships among producers, consumers, and decomposers in an ecosystem.
• For ecosystems, the major source of energy is sunlight. Energy entering ecosystems as sunlight is transferred by producers into chemical energy through photosynthesis. That energy then passes from organism to organism in food webs.

SCIENCE IN PERSONAL AND SOCIAL PERSPECTIVES: Content Standard F

As a result of activities in grades 5-8, all students should develop understanding of

· Natural Hazards

o       Human activities also can induce hazards through resource acquisition, urban growth, land-use decisions, and waste disposal. Such activities can accelerate many natural changes.

· Risks and Benefits

o       Students should understand the risks associated with natural hazards (fires, floods, tornadoes, hurricanes, earthquakes, and volcanic eruptions), with chemical hazards (pollutants in air, water, soil, and food), with biological hazards (pollen, viruses, bacterial, and parasites), social hazards (occupational safety and transportation), and with personal hazards (smoking, dieting, and drinking).

MATERIALS:

For each student:

• “Life in Florida’s Springs Fact Sheet” (RTF) (PDF)

For each group of 3-5 students:

• 1 copy of the “Life in Florida’s Springs: Producer/Consumer Game.”(RTF) (PDF)
  (See the “Prep for Teachers” section for details.)

For the class:

• Producer/Consumer Pyramid (PDF)

• Books, reference materials and/or Internet access to conduct research about life in Florida’s springs.
• A large sheet of paper or board and something with which to write.
• One computer for the teacher with a digital projection system (to play video clips either downloaded or streaming from the Web).

OBJECTIVES:

Students will be able to:

• Explain what springs are and how they are formed;
• Describe at least 3 different species living in the Florida springs ecosystem, naming why they live in the springs, what they eat and how they get their food;
• Explain why the Florida springs ecosystem is an inverted food pyramid;
• Define “producer” and “consumer”;
• Accurately sort organisms into producers and primary, secondary and tertiary consumers;
• Name types of organisms that function as decomposers and explain the role that decomposers play in the ecosystem;
• Describe how organisms can survive in watery, underground caves without sunlight;
• Define “red tide,” how it is caused, and what danger it poses to manatees;
• Describe one species from the Florida springs ecosystem in detail, including what it eats, factors that pose a danger to its survival, and where it lives during different times of the year.

PREP FOR TEACHERS:

Prior to teaching this lesson, you will need to:

Preview all of the video segments and Web sites used in the lesson.

Download the video clips used in the lesson to your classroom computer, or prepare to watch them using your classroom’s Internet connection.

Bookmark the Web sites used in the lesson on each computer in your classroom. Using a social bookmarking tool such as del.icio.us or diigo (or an online bookmarking utility such as portaportal) will allow you to organize all the links in a central location.

Make one copy of the “Life in Florida’s Springs Fact Sheet” for each student.

Make 1 copy of the “Life in Florida’s Springs: Producer/ Consumer Game” for each group of 3-5 students, including the cards and the chart. Cut up the cards for each group, making sure that each group gets a complete set of 15 Cards. (Each card should feature the name of one species.) Each group should also have one Producer/ Consumer Game Chart (not cut up).

Load the “Producer/Consumer Pyramid” onto a screen that can be seen by the class, or recreate it on a classroom board.

Proceed to ACTIVITIES.

GRADE LEVEL: 5-8

TOPIC/SUBJECT MATTER: Life Science/Environmental Science

TIME ALLOTMENT: 1-2 45-minute class periods

OVERVIEW:

This lesson uses video segments from the NATURE film “Crash: A Tale of Two Species” to explore the interrelationship between the horseshoe crab and a small migratory bird called the red knot. Both species are in decline, and the red knot’s future, in particular, depends on the horseshoe crab making a comeback in the waters of the Delaware Bay.

Students will first be introduced to the horseshoe crab via a video segment, learning that the species’ longevity (350 million years) makes the horseshoe crab a “living fossil,” an anomaly in terms of the Earth’s species. They will view several other video segments to explore the interconnectedness between the horseshoe crab and the red knot, following the videos with a discussion of the reasons for the decline of each species. Students will fill out an exit ticket to assess their comprehension of these concepts. An optional additional video segment can be used to explore how humans have come to depend on horseshoe crabs as well (their blood, which evolved to have primitive antibacterial properties, is used to test intravenous drugs for contamination).

As a culminating activity, students will use an interactive online map to research endangered species in the region of the United States where they live. They will discuss the environmental changes that have led to the species’ decline (often of human origin) and will discuss the strategies being employed to prevent their extinction.

MEDIA RESOURCES

Video

NATURE: Crash: A Tale of Two Species (selected segments):

Clip 1: “The Living Fossil”

The horseshoe crab has survived for 350 million years.

Clip 2: “Horseshoe Crabs and Red Knots”

Horseshoe crabs are an essential source of nutrition for migrating birds.

Clip 3: “Protecting the Horseshoe Crab”

Measures have been undertaken to protect the horseshoe crab.

Clip 4: “Horseshoe Crabs and Humans”

The horseshoe crab has immense value to humans for its uses in medical technology.

Access the streaming and downloadable video segments for this lesson at the Video Segments Page.

Web sites

Sierra Club Endangered Species Map

This interactive map provides information on key endangered species, including efforts currently being undertaken to protect them, in different regions of the United States.

Standards:

National Science Education Standards

LIFE SCIENCE: Content Standard C

As a result of their activities in grades 5-8, all students should develop understanding of

• Diversity and adaptations of organisms
  • Biological evolution accounts for the diversity of species developed through gradual processes over many generations. Species acquire many of their unique characteristics through biological adaptation, which involves the selection of naturally occurring variations in populations. Biological adaptations include changes in structures, behaviors, or physiology that enhance survival and reproductive success in a particular environment.

o        Extinction of a species occurs when the environment changes and the adaptive characteristics of a species are insufficient to allow its survival. Fossils indicate that many organisms that lived long ago are extinct. Extinction of species is common; most of the species that have lived on the earth no longer exist.

As a result of their activities in grades 9-12, all students should develop understanding of:

• The Interdependence of Organisms
  • Organisms both cooperate and compete in ecosystems. The interrelationships and interdependencies of these organisms may generate ecosystems that are stable for hundreds or thousands of years.
  • Living organisms have the capacity to produce populations of infinite size, but environments and resources are finite. This fundamental tension has profound effects on the interactions between organisms.
  • Human beings live within the world’s ecosystems. Increasingly, humans modify ecosystems as a result of population growth, technology, and consumption. Human destruction of habitats through direct harvesting, pollution, atmospheric changes, and other factors is threatening current global stability, and if not addressed, ecosystems will be irreversibly affected.

SCIENCE IN PERSONAL AND SOCIAL PERSPECTIVES: Content Standard F

As a result of activities in grades 5-8, all students should develop understanding of

• Populations, Resources, and Environments
• When an area becomes overpopulated, the environment will become degraded due to the increased use of resources.
• Causes of environmental degradation and resource depletion vary from region to region and from country to country.

Materials

For each student:

• Endangered Relationships Exit Ticket (PDF) (RTF)

For each group of 3-4 students:

• One computer with broadband internet access

For the class:

• One computer for the teacher with a digital projection system

Objectives

Students will be able to:

• Describe characteristics of the horseshoe crab;
• Specify how “living fossils” like the horseshoe crab differ from most other species;
• Understand that over 99% of all species that have ever existed on earth are extinct;
• Name specific factors that can lead to species endangerment and extinction;
• List several strategies that can be undertaken by humans to protect endangered species;
• Provide at least one example of species interconnectedness: how the population decline of one species adversely affects another species.

Prep for Teachers

Prior to teaching this lesson, you will need to:

Preview all of the video segments and Web sites used in the lesson.

Download the video clips used in the lesson to your classroom computer, or prepare to watch them using your classroom’s Internet connection.

Bookmark the Web sites used in the lesson on each computer in your classroom. Using a social bookmarking tool such as del.icio.us or diigo (or an online bookmarking utility such as portaportal) will allow you to organize all the links in a central location.

Print and cut out a copy of the “Endangered Relationships Exit Ticket” for each student.

Next: Proceed to Activites

GRADE LEVEL: 5-8

TOPIC/SUBJECT MATTER: Life Science

TIME ALLOTMENT: One to two 45-minute class periods

OVERVIEW:

During this video-enhanced lesson, students will watch video segments from the NATURE film “The Secret World of Sharks and Rays” and learn about adaptations that have helped sharks and rays survive. Students will explore similarities and differences between sharks, rays and other fish. They will watch segments that provide information about physical features and behaviors that have helped sharks and rays survive, with specific attention paid to the angel, wobbegong and saw sharks and the electric, sting and manta rays. Students will work in small groups to research a specific type of shark or ray and share their findings with the class. Students will discover that different types of sharks and rays have different temperaments and diets and that some of the largest sharks and rays are the most gentle.

MEDIA RESOURCES

Video

Clip 1

Fish, Sharks and Rays: A comparison of fish, sharks and rays.

Clip 2

A Close Look at Sharks: A close look at angel, wobbegong and saw sharks and their survival techniques.

Clip 3

A Close Look at Rays: A close look at electric, sting and manta rays and their survival techniques.

Access the streaming and downloadable video segments for this lesson at the Video Segments Page.

Web sites

Ichthyology at the Florida Museum of Natural History

This site features a rich variety of information, games and photographs of a variety of fish, including sharks and rays. The following sections are recommended for this lesson:

• Sharks- This section features information, games and photographs of sharks.
• Biological Profiles- This section provides photographs and detailed information about specific sharks and rays, as well as other fish.

Kidzone Fun Facts for Kids: Sharks

This Web site features a variety of photographs, activities and facts about sharks.

National Geographic: Sharks
This Web site features many photos and facts about sharks, which can be used in this lesson.

Seaworld: Sharks and Rays

This site contains a variety of facts, photographs and diagrams of sharks and rays.

STANDARDS:

National Science Education Standards, Grades 5-8

LIFE SCIENCE: Content Standard C

As a result of their activities in grades 5-8, all students should develop understanding of

• Regulation and behavior
  • Behavior is one kind of response an organism can make to an internal or environmental stimulus. A behavioral response requires coordination and communication at many levels, including cells, organ systems, and whole organisms. Behavioral response is a set of actions determined in part by heredity and in part from experience.
  • An organism’s behavior evolves through adaptation to its environment. How a species moves, obtains food, reproduces, and responds to danger are based in the species’ evolutionary history.
• Populations and ecosystems

• Populations of organisms can be categorized by the function they serve in an ecosystem. Plants and some microorganisms are producers-they make their own food. All animals, including humans, are consumers, which obtain food by eating other organisms. Decomposers, primarily bacteria and fungi, are consumers that use waste materials and dead organisms for food. Food webs identify the relationships among producers, consumers, and decomposers in an ecosystem.

• Diversity and adaptations of organisms
  • Millions of species of animals, plants, and microorganisms are alive today. Although different species might look dissimilar, the unity among organisms becomes apparent from an analysis of internal structures, the similarity of their chemical processes, and the evidence of common ancestry.

• Biological evolution accounts for the diversity of species developed through gradual processes over many generations. Species acquire many of their unique characteristics through biological adaptation, which involves the selection of naturally occurring variations in populations. Biological adaptations include changes in structures, behaviors, or physiology that enhance survival and reproductive success in a particular environment.

MATERIALS

For each group of 2-3 students:

• Books, reference materials and/or computers to conduct research on sharks and rays.

For the class:

• A large sheet of paper or board and something with which to write.
• A photograph of a bull shark and a photograph of a whale shark. (See “Prep for Teachers” section for details.)
• One computer for the teacher with a digital projection system (to play video clips either downloaded or streaming from the Web).

OBJECTIVES

Students will be able to:

• Discuss similarities and differences between sharks, rays and other fish;
• Describe physical features and characteristics that have helped sharks survive, with specifics about angel, wobbegong and saw sharks;
• Provide details of physical features and characteristics that have helped rays survive, with specifics about electric, sting and manta rays;
• Explain that there are many different types of sharks and rays, with varied skills, physical features, temperaments and diets;
• Explain that some sharks and rays are harmful to humans, while others are not and provide specific examples of harmful and gentle species;
• Discuss that sometimes the largest species can be the most gentle;
• Provide detailed information about one species of shark or ray.

PREP FOR TEACHERS

Prior to teaching this lesson, you will need to:

Preview all of the video segments and Web sites used in the lesson.

Download the video clips used in the lesson to your classroom computer, or prepare to watch them using your classroom’s Internet connection.

Bookmark the Web sites used in the lesson on each computer in your classroom. Using a social bookmarking tool such as del.icio.us or diigo (or an online bookmarking utility such as portaportal) will allow you to organize all the links in a central location.

Print out one photo of a whale shark and one photo of a bull shark to show the class. Make sure that the image of the whale shark is about 3 times larger than the bull shark. See the “Web sites” section above for a list of sites with shark photos.

Proceed to ACTIVITIES

GRADE LEVEL: 5-8

TIME ALLOTMENT: Two 45-minute class periods

OVERVIEW:

The loneliest animals are the last of their kind on the planet. Scientists warn that up to 100 species a day are being pushed toward extinction. Sadly, many of these creatures are endangered because of human actions. Nature: The Loneliest Animals profiles a variety of captive breeding programs, designed to bolster these dwindling animal populations.

Using segments from this program and other Web resources, students will discuss different ways that animal species become extinct, and analyze how human actions can positively and negatively influence a species’ population. Students will also discuss the benefits and challenges of helping an endangered species through captive breeding, and will prepare “news segments” for the class to present research on endangered species.

OBJECTIVES

Students will be able to:

• Compare and discuss different causes of extinction;
• Name several currently highly endangered species, and describe how people are trying to bring them back from the brink of extinction;
• Research an endangered species, and present information from online, print, and broadcast resources in an oral report.

MEDIA RESOURCES:

Video:

NATURE, The Loneliest Animals, selected segments

Clip 1: Yangtze giant soft shell turtle

Clip 2: Sumatran rhinoceros

Clip 3: Lemurs

Clip 4: Black-Footed Ferret

Clip 5: Imperiled Lives

Access the streaming and downloadable video segments for this lesson at the Video Segments Page.

Web sites

Yangtze Giant Soft-shell Turtle (China)

Asian Turtle Conservation Network: Rafetus Swinhoei

Fact page on the endangered soft-shell turtle

China’s Turtles: Emblems of a Crisis (New York Times)

Article about the Chinese breeding effort for Rafetus Swinhoei

Sumatran Rhinoceros (Sumatra, Indonesia)

International Rhino Foundation:

Sumatran Rhino Sanctuary

[NOTE: page features graphic photo of two rhinos mating.]

Information about Sumatran Rhinos from the Indonesian sanctuary

Sumatran Rhino

General information about the endangered Sumatran Rhino

News from the Field – International Rhino Foundation Blog

Latest news in Rhino research

Lemurs (Madagascar); including Golden-Crowned Sifaka

Duke University Lemur Center

Information on the many species of lemur at the Duke University Center, including the endangered Golden-Crowned Sifaka

Black-Footed Ferret (United States)

Prairie Wildlife Research

Black-footed ferret conservation information

STANDARDS:

National Science Education Standards

http://www.nap.edu/openbook.php?record_id=4962

LIFE SCIENCE: Content Standard C

As a result of their activities in grades 5-8, all students should develop understanding of

• Diversity and adaptations of organisms
  • Biological evolution accounts for the diversity of species developed through gradual processes over many generations. Species acquire many of their unique characteristics through biological adaptation, which involves the selection of naturally occurring variations in populations. Biological adaptations include changes in structures, behaviors, or physiology that enhance survival and reproductive success in a particular environment.

o        Extinction of a species occurs when the environment changes and the adaptive characteristics of a species are insufficient to allow its survival. Fossils indicate that many organisms that lived long ago are extinct. Extinction of species is common; most of the species that have lived on the earth no longer exist.

SCIENCE IN PERSONAL AND SOCIAL PERSPECTIVES: Content Standard F

As a result of activities in grades 5-8, all students should develop understanding of

• Populations, Resources, and Environments
  • When an area becomes overpopulated, the environment will become degraded due to the increased use of resources.
  • Causes of environmental degradation and resource depletion vary from region to region and from country to country.

MATERIALS:

For the class:

• One computer with Internet access and audiovisual projection system, for screening video segments
• “Last of their Kind” Answer Key (PDF) (RTF)
• [Optional - toothpicks, stopwatch, and flour, for the Extinction Simulation extension activity - see the "Loneliest Animals Extinction Simulation" (PDF)

For each group of 2-3 students:

• Computer with Internet access

For each student:

• “Causes of Extinction” Student Organizer (PDF)(RTF)
• “Last of their Kind?” Student Organizer (PDF) (RTF)
• “Explore a Species” Student Organizer (PDF) (RTF)

PREP FOR TEACHERS

Preview all of the video segments and Web sites used in the lesson.

Download the video clips used in the lesson to your classroom computer, or prepare to watch them using your classroom’s Internet connection.

Bookmark the Web sites used in the lesson on each computer in your classroom. Using a social bookmarking tool such as del.icio.us or diigo (or an online bookmarking utility such as portaportal) will allow you to organize all the links in a central location.

Make copies of student organizers listed in the “Materials” section.

Proceed to ACTIVITIES

GRADE LEVEL: 5-8

TOPIC/SUBJECT MATTER: Life Science

TIME ALLOTMENT: Two 45-minute class periods

OVERVIEW:

During this video-enhanced lesson, students will learn that all dogs came from one ancestor- the wolf. Students will watch and discuss video segments from the NATURE film “Dogs that Changed the World,” and explore different theories about how this transformation happened. Students will learn about different breeds of dogs and create a book with pictures and information about a variety of dog breeds. In the culminating activity, students will interview a dog owner and create a poster and/or a presentation about his/her dog.

MEDIA RESOURCES

Video

Access the streaming and downloadable video segments for this lesson at the Video Segments Page.

Clip 1: From Wolf to Dog

Reflections about the transformation from wolf to dog

Clip 2: The Speed of Change

Exploring the speed of evolution

Clip 3: Today’s Dog

A quick look at the dogs of today

Websites

American Kennel Club

This Web site includes information about the internationally-recognized breeds.

National Geographic Web sites’ Animal Section
This Web site features many photos of animals including photos of dogs and wolves, which can be used in this lesson.

Standards:

National Science Education Standards, Grades 5-8

LIFE SCIENCE: Content Standard C

As a result of their activities in grades 5-8, all students should develop understanding of

• Regulation and behavior

o       An organism’s behavior evolves through adaptation to its environment. How a species moves, obtains food, reproduces, and responds to danger are based in the species’ evolutionary history.

• Diversity and adaptations of organisms

o       Millions of species of animals, plants, and microorganisms are alive today. Although different species might look dissimilar, the unity among organisms becomes apparent from an analysis of internal structures, the similarity of their chemical processes, and the evidence of common ancestry.

o       Biological evolution accounts for the diversity of species developed through gradual processes over many generations. Species acquire many of their unique characteristics through biological adaptation, which involves the selection of naturally occurring variations in populations. Biological adaptations include changes in structures, behaviors, or physiology that enhance survival and reproductive success in a particular environment.

MATERIALS

For each student:

• “Dog Breed” Student Organizer (PDF) (RTF)
• “Dog Interview” Student Organizer (PDF) (RTF)

For the class:

• Photographs of a few very different looking dogs, such as a Chihuahua, a Saint Bernard and a Greyhound. (A good source for these photos is the American Kennel Club Web site.)
• Two photographs of a wolf (full-body and close-up of head)

OBJECTIVES

Students will be able to:

• Explain that all dogs evolved from wolves;
• Discuss theories about how the wolf evolved into the dog;
• Explain how quickly the transformation from wolf to dog might have happened;
• Understand how breeding animals for specific traits can result in the altered look and behavior of the descendents of those animals;
• Describe different breeds of dogs;
• Discuss the behaviors, skills, appearance and personality of one particular dog and explain whether the dog “fits in” with the general description of the breed.

Prep for Teachers

Prior to teaching this lesson, you will need to:

Preview all of the video segments and Web sites used in the lesson.

Download the video clips used in the lesson to your classroom computer, or prepare to watch them using your classroom’s Internet connection.

Bookmark the Web sites used in the lesson on each computer in your classroom. Using a social bookmarking tool such as del.icio.us or diigo (or an online bookmarking utility such as portaportal) will allow you to organize all the links in a central location.

Print out a copy of the “Dog Breed” and “Dog Interview” Student Organizers for each student.

Print out photographs of a few (3-4) very different looking dogs, such as a Chihuahua, a Saint Bernard and a Greyhound. (A good source for these photos is the American Kennel Club Web site.)

Print out two photos of a wolf – a full body shot and a close-up of its head. (One good place to look for wolf photos is the Animal Section of the National Geographic Web site.)

Proceed to Activities

GRADE LEVEL: 5-8

TOPIC/SUBJECT MATTER: Life Science

TIME ALLOTMENT: Two 45-minute class periods

OVERVIEW:

During this video-enhanced lesson, students will learn about dogs’ senses and how they compare to those of humans, with particular focus on the senses of smell and hearing. Students will test their own senses of smell in a sniff test of familiar scents. Students will explore different ways that dogs help humans and watch video segments from the NATURE film “Dogs that Changed the World,” featuring 3 different situations where dogs help humans-sled dogs in the Arctic Circle, sheep dogs in the United Kingdom and a dog in the US who alerts a boy with diabetes when his blood sugar levels are low. Students will then conduct research and create a presentation about a modern dog hero.

MEDIA RESOURCES:

Video

Access the streaming and downloadable video segments for this lesson at the Video Segments Page.

Clip 1: Dog Sense

A comparison of dog and human senses

Clip 2: Sled Dogs

A close look at sled dogs and their relationships with the Inuit people in the Arctic Circle

Clip 3: Moving Sheep

A close look at how dogs help perform this job

Clip 4: Delta

Delta, a German Shepherd helps prevent a boy from having diabetic seizures

Web sites

American Kennel Club

This Web site is a good source for information and photographs of dogs.

Los Angeles Natural History Museum

This Web site contains an exhibit entitled “Dogs- wolf, myth, hero and friend,” which contains a lot of information about dogs and related online activities and hands-on activities that can be done at home. One of the featured activities is “Dog Gone Perfect Laboratories,” which challenges visitors to build an online dog for a specific task (pull a sled, herd sheep, etc.). To access this activity, go to the Artificial Selection page, scroll down to the bottom and click on “Dog Gone Perfect Laboratories Activity” in the left hand column.

National Geographic Web sites’ Animal Section
This Web site features many photos of dogs, which can be used in this lesson.

Sheppard Software Web Site’s Dog Section

This Web site includes interesting facts, quizzes and activities about dogs, including a fun “Dog Heroes” quiz.

Standards:

National Science Education Standards, Grades 5-8

LIFE SCIENCE: Content Standard C

As a result of their activities in grades 5-8, all students should develop understanding of

• Reproduction and heredity

o       The characteristics of an organism can be described in terms of a combination of traits. Some traits are inherited and others result from interactions with the environment.

• Regulation and behavior

o       Behavior is one kind of response an organism can make to an internal or environmental stimulus. A behavioral response requires coordination and communication at many levels, including cells, organ systems, and whole organisms. Behavioral response is a set of actions determined in part by heredity and in part from experience.

o       An organism’s behavior evolves through adaptation to its environment. How a species moves, obtains food, reproduces, and responds to danger are based in the species’ evolutionary history.

• Diversity and adaptations of organisms

o       Biological evolution accounts for the diversity of species developed through gradual processes over many generations. Species acquire many of their unique characteristics through biological adaptation, which involves the selection of naturally occurring variations in populations. Biological adaptations include changes in structures, behaviors, or physiology that enhance survival and reproductive success in a particular environment.

MATERIALS:

For each student:

• “Dogs’ Work” Student Organizer (PDF) (RTF)

For the class:

• A large sheet of paper or board and something with which to write
• Five small, identical, opaque containers (such as 35mm film canisters)
• Five cotton balls and aromatic items. (See the “Prep for Teachers” section for details.)

Note: For a large class, you can prepare more than 5 containers and cotton balls. See the “Prep for Teachers” section for details.

• Labels or small pieces of paper and tape (to label the containers)
• A photograph of a Bloodhound (If you need a photograph, go to the American Kennel Club’s Bloodhound page.)
• One computer for the teacher with a digital projection system and internet access
• One copy of the “Dogs’ Work” Student Organizer Answer Key for the teacher

Objectives

Students will be able to:

• Compare human and dog senses;
• Provide details about how dogs use their senses of smell and hearing to help humans;
• Discuss different ways that dogs help humans;
• Describe tasks performed by sheep dogs, sled dogs and service dogs;
• Describe different skills of different breeds of dogs;
• Explain how a dogs’ features (body, head, tail, etc.) can be advantageous for specific environments and tasks.
• Provide examples of heroic acts performed by dogs;
• Discuss why dogs are referred to as “man’s best friend.”

Prep for Teachers

Prior to teaching this lesson, you will need to:

Preview all of the video segments and Web sites used in the lesson.

Download the video clips used in the lesson to your classroom computer, or prepare to watch them using your classroom’s Internet connection.

Bookmark the Web sites used in the lesson on each computer in your classroom. Using a social bookmarking tool such as del.icio.us or diigo (or an online bookmarking utility such as portaportal) will allow you to organize all the links in a central location.

Prepare containers and cotton balls for the sniff test:

o       Pre-soak at least 5 cotton balls with common scents. Possible scents include: lemon, orange, pizza sauce, peppermint extract, vanilla extract, garlic “juice” squeezed from a clove, cinnamon, etc.

o        Place each cotton ball in one of the clearly-labeled, small, identical, opaque containers, making sure only to put one cotton ball in each container.

o       Place a label on each container. Write a different number, from 1to 5, on each label.

Note: During the “sniff test” activity in the lesson, you will be dividing the students into groups and giving each group one container at a time. If you have a large class, feel free to prepare more than 5 cotton balls. Make sure to have the corresponding number of containers and labels.

Make a copy of the “Dogs’ Work” Student Organizer (PDF) (RTF)for each student.

Make one copy of the “Dogs’ Work” Student Organizer Answer Key (PDF) (RTF) for the teacher.

Proceed to ACTIVITIES

GRADE LEVEL: 5-8

TOPIC/SUBJECT MATTER: Earth Science

TIME ALLOTMENT: 1-2 Class periods

OVERVIEW:

This lesson uses video segments from the NATURE film “Earth Navigators” to explain what causes the Earth’s seasons and seasonal changes.  Students will explore the causes and effects of the changes in the Earth’s seasons using a hands-on activity and a Web interactive.  As a culminating activity, students will learn about seasonal milestones using video segments from ‘Earth Navigators.”

MEDIA RESOURCES:

Video

Access the streaming and downloadable video segment for this lesson at the Video Segments Page.

Clip 1: Earth’s Seasons

Web sites:

Seasons Interactive

This Web interactive contains seasonal information for four cities around the world over the course of one year.

Times Solstices & Equinoxes 2000 – 2010

This Web site gives the times and dates of the solstices and equinoxes from 2000 – 2010, using information drawn from the U.S. Naval Observatory

Standards:

National Science Education Standards, Grades 5-8

http://www.nap.edu/openbook.php?record_id=4962

Earth and Space Science

Content Standard D

As a result of their activities in grades 5-8, all students should develop an understanding of

• Structure of the earth system
• Earth’s history
• Earth in the solar system

EARTH IN THE SOLAR SYSTEM

[See Unifying Concepts and Processes]

• The earth is the third planet from the sun in a system that includes the moon, the sun, eight other planets and their moons, and smaller objects, such as asteroids and comets. The sun, an average star, is the central and largest body in the solar system.
• Most objects in the solar system are in regular and predictable motion. Those motions explain such phenomena as the day, the year, phases of the moon, and eclipses.

The sun is the major source of energy for phenomena on the earth’s surface, such as growth of plants, winds, ocean currents, and the water cycle. Seasons result from variations in the amount of the sun’s energy hitting the surface, due to the tilt of the earth’s rotation on its axis and the length of the day.

MATERIALS:

For each student:

• Seasonal Milestones Organizer (PDF) (RTF)
• Seasonal Milestones Organizer Answer Key (PDF) (RTF)

For each pair/group:

• Seasons Interactive Organizer (PDF) (RTF)
• Seasons Interactive Organizer Answer Key (PDF) (RTF)

For the class:

• Globe
• Large beach ball
• Seasonal Milestones Organizer Answer Key
• Seasons Interactive Organizer Answer Key

Objectives:

Students will be able to;

• Explain Earth’s pattern of orbit around the Sun
• Describe seasonal milestones
• Identify factors that contribute to seasonal changes
• Compare seasons in the Northern and Southern Hemispheres

Before the Lesson/Prep for Teachers:

Prior to teaching this lesson, you will need to:

Preview all of the video segments and Web sites used in the lesson.

Download the video clips used in the lesson to your classroom computer, or prepare to watch them using your classroom’s Internet connection.

Bookmark the Web sites used in the lesson on each computer in your classroom. Using a social bookmarking tool such as del.icio.us or diigo (or an online bookmarking utility such as portaportal) will allow you to organize all the links in a central location.

Make copies of the Student Organizers for each student in the class.

Proceed to ACTIVITIES

(Click here for a printer-friendly version of this lesson.)

GRADE LEVEL: 5-8

TOPIC/SUBJECT MATTER: Science

TIME ALLOTMENT: 1-2 class periods

OVERVIEW

This lesson uses video segments from the NATURE film “Tall Blondes” to illustrate the effects of wildlife conservation and relocation, using giraffes as an example.  Students will explore the different types of human-animal relationships, and then view video segments which look at human-giraffe relations and the effect to preserve the giraffe population in parts of Africa.  This will be followed by a discussion of human behavior and impact on wildlife populations.  As a culminating activity, students will examine different careers in wildlife conservation.

MEDIA RESOURCES:

VIDEO

Clip 1: “In the Wild”

Introduction to translocation of giraffes.

Clip 2:
“On the Move”

Example of processes of translocation.

Clip 3:

“New Digs”

Giraffes arrive at the game farm and get used to their environment.

Clip 4: “Giraffe Manor”

Giraffe Behavior & human interactions

Access the streaming and downloadable video segments for this lesson at the Video Segments Page.

WEB SITES

NATURE: Tall Blondes: Giraffe Translocation

Background on translocation and an interview with the director of a wildlife relocation firm.

The Game Capture School

Web site for a school located in South Africa dedicated to wildlife conservation and education.

GCC: African Fund for Endangered Wildlife

Organization which concentrates on education school children about conservation efforts.

The Giraffe Manor

Official Web site for the Giraffe Manor hotel & giraffe preserve, as seen in “Tall Blondes.”

Wildlife Translocation Association

Association of companies engaged in the wildlife conservation industry in South Africa

Wildlife Conservation Society

Home of the conservation organization led by the Bronx Zoo.

STANDARDS:

National Science Education Standards, Grades 5-8

Content Standard E

UNDERSTANDINGS ABOUT SCIENCE AND TECHNOLOGY

• Scientific inquiry and technological design have similarities and differences. Scientists propose explanations for questions about the natural world, and engineers propose solutions relating to human problems, needs, and aspirations. Technological solutions are temporary; technologies exist within nature and so they cannot contravene physical or biological principles; technological solutions have side effects; and technologies cost, carry risks, and provide benefits.
• Many different people in different cultures have made and continue to make contributions to science and technology.
• Science and technology are reciprocal. Science helps drive technology, as it addresses questions that demand more sophisticated instruments and provides principles for better instrumentation and technique. Technology is essential to science, because it provides instruments and techniques that enable observations of objects and phenomena that are otherwise unobservable due to factors such as quantity, distance, location, size, and speed. Technology also provides tools for investigations, inquiry, and analysis.
• Perfectly designed solutions do not exist. All technological solutions have trade-offs, such as safety, cost, efficiency, and appearance. Engineers often build in back-up systems to provide safety. Risk is part of living in a highly technological world. Reducing risk often results in new technology.
• Technological designs have constraints. Some constraints are unavoidable, for example, properties of materials, or effects of weather and friction; other constraints limit choices in the design, for example, environmental protection, human safety, and aesthetics.
• Technological solutions have intended benefits and unintended consequences. Some consequences can be predicted, others cannot.

Content Standard F

POPULATIONS, RESOURCES, AND ENVIRONMENTS

• When an area becomes overpopulated, the environment will become degraded due to the increased use of resources.
• Causes of environmental degradation and resource depletion vary from region to region and from country to country.

NATURAL HAZARDS

• Human activities also can induce hazards through resource acquisition, urban growth, land-use decisions, and waste disposal. Such activities can accelerate many natural changes.

SCIENCE AND TECHNOLOGY IN SOCIETY

Science and technology have advanced through contributions of many different people, in different cultures, at different times in history.

Scientists and engineers work in many different settings, including colleges and universities, businesses and industries, specific research institutes, and government agencies.

Science cannot answer all questions and technology cannot solve all human problems or meet all human needs. Students should understand the difference between scientific and other questions. They should appreciate what science and technology can reasonably contribute to society and what they cannot do. For example, new technologies often will decrease some risks and increase others.

MATERIALS

For each group of students:

• Large sheets of paper or posterboard for Introductory Activity

For each student:

• Conservation Strategies Organizer (PDF) (RTF)

OBJECTIVES

Students will be able to:

• Provide examples of human interactions with animals;
• Understand ways in which human behavior affects wild animal populations;
• Detail processes of conservation and translocation;
• Explain the pros and cons of wildlife conservation efforts;
• Identify and describe careers in wildlife conservation.

Before the Lesson/Prep for Teachers

Prior to teaching this lesson, you will need to:

Preview all of the video segments and Web sites used in the lesson.

Download the video clips used in the lesson to your classroom computer, or prepare to watch them using your classroom’s Internet connection.

Bookmark the Web sites used in the lesson on each computer in your classroom. Using a social bookmarking tool such as del.icio.us or diigo (or an online bookmarking utility such as portaportal) will allow you to organize all the links in a central location

Next: Proceed to Activities

Crocodiles have roamed the earth for millions of years. Differing little from their prehistoric ancestors, they have survived everything from the ice ages to poaching. In this lesson, students will examine the similarities between crocodiles and humans as they compare and contrast skeletal structure, height ratios and body parts.

Grade Level: Grades 6-8

Subject Areas: Science, Math

Learning Objectives

Students will be able to do the following:

• compare the skeletal structure of supersize crocodiles to humans.
• analyze the similar internal structures of humans and crocodiles.
• use ratio to estimate the height of a person.
• use visualization, spatial reasoning, and geometric modeling to create a supersize croc image.

Materials:

• Computer with Internet access
• The video of the episode “Supersize Crocs”  
• “Compare the Facts” worksheet (PDF)
• “How do Supersize Crocs Measure Up?” organizer (PDF)
• “Crocodile and Human Comparison” Venn diagram (PDF)
• Tape measure (one for each group of students)
• Rulers: one per student
• Yardsticks: several
• 18×24 piece of paper: one per student

Bookmark the following sites:

Super Croc website
http://www.supercroc.org/about.htm
This website contain facts about the Sarcosuchus imperator.

Museum of Natural History
http://www.flmnh.ufl.edu/natsci/herpetology/crocs/crocodilephotos.htm
This website contains a large selection of crocodile photographs.

STANDARDS

www.mcrel.org

Math
Level III [Grade 6-8]

Standard 2. Understands and applies basic and advanced properties of the concepts of numbers

7. Understands the concepts of ratio, proportion, and percent and the relationships among them

Standard 3. Uses basic and advanced procedures while performing the processes of computation

6. Uses proportional reasoning to solve mathematical and real-world problems (e.g., involving equivalent fractions, equal ratios, constant rate of change, proportions, percents)

Standard 5. Understands and applies basic and advanced properties of the concepts of geometry

6. Understands the mathematical concepts of similarity (e.g., scale, proportion, growth rates) and congruency

Science
Level III [Grade 6-8]

Standard 5. Understands the structure and function of cells and organisms

4. Knows that multicellular organisms have a variety of specialized cells, tissues, organs, and organ systems that perform specialized functions (e.g., digestion, respiration, reproduction, circulation, excretion, movement, control and coordination, protection from disease)

Standard 7. Understands biological evolution and the diversity of life

4. Knows evidence that supports the idea that there is unity among organisms despite the fact that some species look very different (e.g., similarity of internal structures in different organisms, similarity of chemical processes in different organisms, evidence of common ancestry)

Raptors possess keen senses and maneuvering skills that have been envied by humans throughout time. The traits of raptors have long been studied for the development of aircraft. How are the raptors’ senses different from humans’ senses? How have humans and raptors interacted over time? In this lesson, students will compare human traits to those of raptors and create an interactive and information booth to share with classmates. They will further investigate how raptors and humans have interacted and look at the ways raptors’ traits have influenced the design of aircraft. Students will create a newsletter summarizing their thoughts and findings.

Grade level: Grades 6 – 8

Subject areas: Language Arts, Science, Social Studies

Learning objectives:

• Students will be able to do the following:
• gather and organize information
• create an information booth
• create an activity for classmates’ participation
• compare traits of humans to those of raptors
• examine the relationship between humans and raptors
• compare raptors to aircraft

Materials:

• Computers with Internet access
• The video of the episode: Raptor Force from the Thirteen series NATURE
• Paper and writing tools
• “Raptors – Word Web”
• “Raptor Newsletter” Rubric
• “Raptor Information Booth” Rubric
• “Raptor Information Booth” Peer Review
• “Human – Raptor Relationship” Organizer
• “Newsletter Checklist”

Bookmark the following sites:

Our Living Resources
http://biology.usgs.gov/s+t/noframe/b024.htm
This web page contains an article by National Biological Service that is a summary of raptor status based on the biological literature and on state and federal government reports.

The Raptor Center
http://www.raptor.cvm.umn.edu/
The Raptor Center at the University of Minnesota College of Veterinary Medicine specializes in the medical care, rehabilitation, conservation, and study of eagles, hawks, owls, and falcons.

The Peregrine Fund: World Center for Birds of Prey
http://www.peregrinefund.org/default.asp
This website contains a wealth of information relating to raptors.

Birds of Prey
http://www.birdsofprey.blm.gov/pdf/raptorfacts.pdf
This website contains facts about raptors.

Raptor Force Web site
http://www.pbs.org/wnet/nature/raptorforce
The online companion to NATURE’s Raptor Force

STANDARDS

www.mcrel.org

Language Arts

Writing

Standard 1. Uses the general skills and strategies of the writing process

Benchmark 6. Writes expository compositions (e.g., states a thesis or purpose; presents information that reflects knowledge about the topic of the report; organizes and presents information in a logical manner, including an introduction and conclusion; uses own words to develop ideas; uses common expository structures and features, such as compare-contrast or problem-solution)8. Writes for different purposes (e.g., to entertain, inform, learn, communicate ideas)

Benchmark 7. Writes narrative accounts, such as short stories (e.g., engages the reader by establishing a context and otherwise developing reader interest; establishes a situation, plot, persona, point of view, setting, conflict, and resolution; develops complex characters; creates an organizational structure that balances and unifies all narrative aspects of the story; uses a range of strategies and literary devices such as dialogue, tension, suspense, figurative language, and specific narrative action such as movement, gestures, and expressions; reveals a specific theme)

Benchmark 10. Writes persuasive compositions (e.g., engages the reader by establishing a context, creating a persona, and otherwise developing reader interest; develops a controlling idea that conveys a judgment; creates and organizes a structure appropriate to the needs and interests of a specific audience; arranges details, reasons, examples, and/or anecdotes persuasively; excludes information and arguments that are irrelevant; anticipates and addresses reader concerns and counter arguments; supports arguments with detailed evidence, citing sources of information as appropriate)

Reading

Standard 7. Uses reading skills and strategies to understand and interpret a variety of informational texts

Benchmark 1. Uses reading skills and strategies to understand a variety of informational texts (e.g., electronic texts; textbooks; biographical sketches; directions; essays; primary source historical documents, including letters and diaries; print media, including editorials, news stories, periodicals, and magazines; consumer, workplace, and public documents, including catalogs, technical directions, procedures, and bus routes)

Life Sciences

Standard 6. Understands relationships among organisms and their physical environment

Benchmark 2. Knows factors that affect the number and types of organisms an ecosystem can support (e.g., available resources; abiotic factors such as quantity of light and water, range of temperatures, and soil composition; disease; competition from other organisms within the ecosystem; predation)

Nature of Science

Standard 11: Understand the nature of scientific knowledge.

Benchmark 2. Understands the nature of scientific explanations (e.g., use of logically consistent arguments; emphasis on evidence; use of scientific principles, models, and theories; acceptance or displacement of explanations based on new scientific evidence)

PROCEDURES FOR TEACHERS

Introductory Activity

Time for Completion: Thirty minutes.

The purpose of this activity is to activate background knowledge of raptors.

Provide each student with a piece of paper, and ask them to create a word web. Tell them to write the word “Raptor” in the center of the paper. Next, have students create “arms” extending out from “Raptor” that names the different kinds of raptors that they know. For each arm, students should include other information they know about that raptor, and any questions they would like to have answered about it.

Watch the introduction to “Raptors” from the beginning 00:00 to 02:07. Ask students to fill in any answers to questions from their webs that may have been addressed in the introduction. After students have filled in their answers, ask them to read any questions aloud that they were unable to answer. Allow other students who may have the answers to provide them; otherwise, the question can be recorded and researched as a homework assignment. A sample word web is included at the end of this lesson.

Steps

Activity One

Time for completion: Thirty minutes to explain and prepare the assignment. Three to five days as homework. Additional class time for students to observe, evaluate, and participate in the activities at the booths of other students.

Raptors have sensory skills that are more acute than human sensory skills. In this activity, students will work in small groups to create a “Raptor Information Booth” in which each student group will provide information that compares the senses or traits of a raptor to those of humans. Each booth will also contain an interactive component.

Watch portions of “Raptors” that describe the sensory skills and/or adaptations of raptors. Sections addressing these include: 10:19 extra eyelid/tears/breathing systems; 32:56 ears; 36:17 and 40:47 eyes.

Divide the class into small groups.

Allow each group to choose a sense/adaptation to study. (More than one group can work on the same sense/adaptation.) Explain to students that they are going to create an information booth on their specific raptor sense or adaptation.

The booth should include the following: a poster or brochure that includes factual information about raptors, including a description of raptor abilities in comparison to human abilities, a visual aid (e.g., a 3-d model, chart, diagram, etc) and an interactive activity for the class to try. Some suggestions for the activity include setting up a place where students can compare 20/20 vision to 20/7 vision, an item that can be used to amplify hearing, and a place where students can measure their “wing span” and compare that to the wing span of specific raptors.

Allow time for groups to work on creating their booths. Then, provide time for students to visit the other booths. You may also choose to invite another class in to see the booths. A peer evaluation of the booths may be conducted.

Activity Two

In this activity, students build on what was learned in Activity One by investigating the relationship between raptors and humans throughout time. Students will also investigate the influence raptors have had on aircraft design.

Time for completion: One to two class periods.

Provide students with the “Human-Raptor Relationship” organizer to record information from articles, Internet research and class discussions. This information will later be used to create a newsletter.

Using the Internet, media center or other resources, allow students time to explore the relationship between humans and raptors. How have raptors influenced human inventions? What have humans done to help raptors?

Provide students with the opportunity to visit the History of Falconry section of the PBS Nature website. Have students record their findings in the “Human-Raptor Relationship” organizer.

Have students watch the slide show section of the PBS Nature site. Again, have the students record their notes and thoughts on the organizer.

Divide the class into small groups, ask them to create a newsletter sharing and summarizing their findings. The newsletter requirements include a story about the history of falconry, a story about human-raptor relationships, a story about the influence of raptors on aviation, a letter to the editor, a raptor puzzle or trivia quiz, a comic, at least one picture, and a chart or diagram.

Students may share their newsletters with the class if time allows.

Assessment Suggestions

Raptor booths may be assessed using the “Information Booth Rubric” and the “Peer Evaluation Rubric.” The “Newsletter Rubric” may be used to assess students’ raptor newsletters.

Extension Activity

Identify raptor habitats in your area. Find out the number and types of raptors that live near you. Find out if they being threatened and what (if anything) is being done to protect them.

About the Author

This lesson was prepared by Rebecca Walters. Rebecca is a graduate of Northern Michigan University and holds an education degree in chemistry and math. Rebecca has worked as both a public school educator and as an education consultant over the past fifteen years.