The Truth About Killer Whales Instructional
Objectives
Background Material
Activity
Evaluation
Web
Resources
Topic:
Predator/Prey Relationships in Patagonia
Instructional
Objectives: Students will:
1. Identify both male and female killer whales.
2. Construct a life size male killer whale.
3. Research killer whales. Identify habitat,
range, food sources and behavior of killer whales in
Patagonia and record information in student science
journals.
Background
Material:
The orca or killer whale, (Orcinus, orca-scientific
name) is the largest of all dolphins. The Orca is a
very large animal, males grow up to 30 feet long and females up to 25
feet. Other identification includes a dorsal fin up
to six feet tall on males and three feet tall with a
slight hook on females. The orca is recognized by a
black back and a white belly. Orcas are found all
over the world. They are found in cold water off
Patagonia.
Orcas can weigh up to 12,000 pounds. Some of the Orcas have a saddle
shape on the back which can be white or gray. Orcas
are known to eat fish, seals, sea lions, birds,
turtles and sting rays. Killer whales are cooperative
hunters.
(Source: Redford, Kent H., and Eisenberg, John F.,
Mammals of the Neotropics, the Southern Cone, Volume
2, Chile, Argentina, Uruguay, Paraguay, The
University of Chicago Press, Chicago and London,
1992; and Gardner, Robert, The Whale Watchers' Guide,
Julian Messner, New York, 1984.)
Activity:
Construct a Killer Whale
Target Grade Level:
Middle Level Grades 5-9
Materials Needed:
- School gym or backyard (Best if inside)
- Student Science Journals
- 1 roll (12 feet by 100 feet) of black plastic
covering
- 5 rolls (2 feet by 100 feet) of clear package
strapping tape
- 1 roll (12 feet by 100 feet) of white plastic
covering
- Several tape measures for students to use
- Scissors
- 1 household fan, rectangular with a 16 inch or
larger blade or school gym fan
- 2 paper plates for killer whale eyes
- 1 roll of white plastic tape for teeth and mouth
- Construction plan for killer whales
Procedures:
1. Click the links labelled "a" and
"b" below to view and print the
construction plans for killer whales.
a. Construction plan #1
b. Construction plan #2
2. Record all steps taken to construct a killer whale in student science journals.
3. Review plan for construction and make sure all
necessary materials are present. All taping must be
from a continuous roll so that there are no air leaks
by which air could
escape.
4. Unroll black and white (12 foot by 100 foot) plastic
covering. Have students measure and cut at 30 foot
lengths, one piece from each roll. Then cut the 30
foot piece in half so that two 6 foot by 30 foot
pieces remain, one will be black and one white. Save
remaining pieces for tail and fins. Tape black and
white sections together as per construction map. Be sure to round out head and tail sections by
folding plastic ends into flaps to give the killer whale a
torpedo shape.
5. Use scissors to cut out two, 6 foot by 3 foot
dorsal fins which will then be taped together on
three sides, leaving one side to attach to
opening on killer whale (on top) to allow air to
enter. This should be done on all fins and tail, and
two, 3 foot by 2 foot pectoral fins (on side) with
remaining black plastic as per downloaded
construction map below. Continue by cutting two tail
sections, 3 foot by 2 foot per construction map.
Assemble all three fins and tail section with
strapping tape. Use strapping tape to attach dorsal
fin, two pectoral fins and tail to the body of the
killer whale. Continue by cutting 1 saddle shape out
of the remaining white plastic piece, 4 foot by 5
foot.
6. Once the entire whale is sealed, attach white saddle
shaped plastic piece behind the dorsal fin on the top
of the killer whale. Cut pieces of white plastic tape
to form mouth and teeth of killer whale. Cut paper
plates in the shape of eyes and attach. Following
this, use remaining black plastic to cut a 2 foot
hole near the rear of the killer whale as per
construction map and build and attach a small 2 foot
diameter tunnel 4 feet long and attach to the fan.
Inflate the whale by turning on the fan and see that
all fins and the tail inflate.
7. Research killer whales, record information in
student science journals and be prepared to present
research at the classroom International Patagonian
Wildlife Conference (See lesson on PBS International Patagonian
Wildlife Conference).
Evaluation/Alternative
Assessment:
-Observe the construction and finished product and
create a rubric for the project which will assess
students work habits, quality of work and adherance
to construction instructions.
-Present the research on killer whales at a
Patagonian Wildlife Conference.(See lesson on PBS International Patagonian
Wildlife Conference)
-Students will reflect on the size and construction
of a killer whale in Student Science Journals along
with the data collected in their research.
Elementary Extension:
Construct a killer whale from a black and white roll of bulletin board paper. Killer whale should be 30 feet long,
and have a 6 foot dorsal fin. This will be a two
dimensional model. Mouth and teeth can be drawn on
black paper with chalk. Find a story about killer
whales and read to the class.
High School Extension:
Track the migration patterns of killer whales in
Patagonia and compare and contrast them to the pods
of killer whales in the Northwest Pacific Coast of
Washington State, British Columbia and Alaska.
Research web sites for research being conducted on
killer whales.
Web
Resources:
Sea World: Killer Whales
http://www.seaworld.org/infobooks/KillerWhale/home.html
Vancouver Aquarium
http://www.killerwhale.org/index2.html
Kids Planet: Killer Whale
http://www.kidsplanet.org/factsheets/orca.html
National Parks Conservation Association: Killer Whales
http://www.npca.org/marine_and_coastal/marine_wildlife/orca.asp
Alaksa Fisheries Science Center: Killer Whales
http://nmml.afsc.noaa.gov/education/cetaceans/killer2.htm
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