Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Support PBS Shop PBS Search PBS
SAF Archives search ask the scientists in the classroom cool science
welcome
on the islands
cyber field trip
for students
water world

taxonomic fun

test the earth

dna adventure

backyard science

careers in science

interactive map

glossary
for teachers
web resources
galapagos homepage
Destination: Galapagos Islands Cyber Field Trip
ON THE ISLANDS

Cyber Field Trip Student Activity
Taxonomic Fun: Classifying the Life Around Us


Introduction
Vocabulary
Materials
Procedure
Critical Thinking Questions



INTRODUCTION

The Galapagos Islands are home to some of the most unusual organisms on Earth, many of which we hope to meet on our trip. To find order in the tremendous diversity of life on Earth, the science of taxonomy, or the ordered classification of organisms, was developed. In 1753, Carl von Linnaeus introduced a two-word naming system known as binomial nomenclature, which we continue to use today.

VOCABULARY

Use the glossary to define any unfamiliar terms:



MATERIALS

  • printouts of photographs below
  • scissors
  • glue or tape
  • 3 x 5 index cards
  • pen


PROCEDURE

In this activity, you will be creating your own classification system.

  1. Print out a copy of the various organisms pictured below.

  2. Cut out each organism and tape or glue the picture to a 3 x 5 index card.

  3. Separate the organisms into two groups that are similar in some way.

  4. Identify the subdivisions with a category name and indicate the name on the bottom of each card.

  5. Now separate each group into two subdivisions of species that have more specific like characteristics.

  6. Continue to make subdivisions until each organism is in a category by itself.
photograph of baby seal photograph of crab
photograph of bear photograph of blue footed booby
photograph of butterfly photograph of cat
photograph of bat photograph of elephant
photograph of frog photograph of goldfish
photograph of gull photograph of flower
photograph of iguana photograph of leaf
photograph of owl photograph of fern
photograph of mushroom photograph of leopard
photograph of penguin photograph of tarantula
photograph of lemur photograph of raccoon
photograph of flamingo photograph of Alan Alda (human)
photograph of shark photograph of ant




CRITICAL THINKING QUESTIONS
  • On what basis did you initially separate organisms?

  • After the initial grouping, what characteristics did you use as distinguishing factors?

  • Specify the kingdoms that were noted in your separations.

  • In terms of shared characteristics, what happens as you make more subdivisions?

  • What phyla were represented in your groupings?

  • What classes were represented in your groupings?




 

Scientific American Frontiers
Fall 1990 to Spring 2000
Sponsored by GTE Corporation,
now a part of Verizon Communications Inc.