|
Can be adapted to
any age depending upon ability -
this lesson is for .
Overview
Biologists
need to know about animal behavior toprotect endangered species or
control disease or pests.
The
California Condor was down to one in the natural habitat andvery few in
captivity because of the pesticide DDT being
used
by farmers.
Also
the Tule Elk in Point ReyesCalifornia was near extinction
until scientists found thatthese elk needed certain plants introduced
back into theenvironment containing copper.
Scientists
need to know aboutsampling, animal mapping so that they don't have to
look atevery single animal in order to make an inference
about aproblem.
Purpose
To
discover through the use of inference and deduction the needs and wants
of animals.
To
learn how to carefully observe and record behavior
systematically as the animal moves through its habitat.
To
learn about sampling to get statistics for inference.
To
learn how to graph and what a graph can do.
To
learn about caring for and being kind to all living creatures.
To
learn about variables.
Resources and
materials
Live
crickets - one in ziplock bag per group - crickets can
be obtained from pet stores for about $.50/doz. - they
are
used for food for other pets.
Hamsters,
gerbils, goldfish can also be used (borrowed from pet stores orchildren
in the classroom.) In this lesson we will be usingcrickets.
Large
boxes - at least 8" X 10" (you can add paper tosides to make
taller so that animal will not jump out).
Colored
round dot stickers - about 1/2" in diameter - sheet of 80 per group.
Three
blank 8 X 10 pieces of paper for each group.
1
pencil per group.
Large
clock with second hand.
2"
X 3" construction. paper for shelter (folded in a triangle)
Nuts,
cereal, apple slice or bran for food.
Task cards:
Recorder
Number
dots from 1 to 20 - three times
Place
eyes on dots to show in which direction animal moves.
At
end of trial describe the animal's actions.
After
recording for one trial, swap tasks with another team member.
Timekeeper
Make
sure team members are ready to start.
Tell
Animal Manager when to place the animal in the center of box.
Watch
the clock and call "Time!" every 15 seconds for 5 min. (20 times).
Observer
Watch
closely where the animal moves.
Tell
the Recorder in which direction to place the dots.
Remind
your team members not to disturb the animal, not to touch it or talk
too loudly.
After
observing for one trial, swap tasks with another team member.
Animal Manager
Hold
the animal or its container until your team members are ready to begin
mapping.
Put
the animal in the center of the box when Time keeper says to start.
Hold
the animal between trials.
Keep
the animal from escaping.
After
managing the animal for one trial, swap tasks with another team member.
Graph paper
Set
up so that part of graph paper is to graph trial 1, part for trial 2
and part for trial 3.
Everyone
should participate and keep own copy for his/her own science
journal.
Trial 1
Vertical
axis Number of dots on Map 0 - 20
Across
bottom, write: IN THE OPEN AREA and NEXT TO WALLS andLOOKING IN CORNERS.
Trial 2
Across
bottom horizontally:
IN
THE OPEN AREANEXT TO WALLS, FACING INTO CORNERS, NEAR OR IN THE SHELTER.
Trial 3
Across
bottom horizontally:
IN
THE OPEN AREA, NEXT TO WALLS, NEAR THE OR IN SHELTER, NEAR OR IN THEFOOD
Resources:
Library
books or stories about animals near extinction.
GEMS
- Lawrence School of Science Cal. Berkeley Animal Mapping
Activities and
procedures :
Read
any material you find in library or elsewhere about the Tule Elk,
California Condor, wolf, or any other interesting animal scientists are
investigating.
Put on board or
large piece of paper so that all
children can view, a large square or rectangle to represent the
classroom.
Then
have large 1" stickers numbered from 1- 20 with eyes on one side.
Send
one child out of the room for a few minutes while you explain to the
rest of the class that you are going to map the child's movements when
he/she returns.
Then
have him/her come back.
Map
in front of theclass on the board or large sheet of paper where he goes
in the room.
Every
20 seconds place a sticker with eyes pointed in the direction he is
facing and on the spot on the paper showing his relationship to the
room.
Explain
thatthe class will use the same technique to map movements of crickets.
Assigning team
tasks
1.
Divide class into teams of 4 students & give task cards
2.
Explain 4 roles, have them read task cards aloud, emphasize tasks
rotate.
3.
Let teams take a few minutes to delegate tasks, number the dots and
place eyes on dots.
4.
Give box, cricket in ziplock bag to animal manager.
Assign groups
1.
Explain there will be 3 trials per cricket. In trial l, box
will be empty.
2.
Place animal in center of box, record movements every 15 sec. for 20
samples.
Record movement by taking sticker and placing it on blank paper eyes
facing correct direction, in corresponding location
to the place in the box.
If animal jumps out of box, put it back where it was and continue.
3.
In trial 2 box will have shelter. Fold a rectangular piece of
construction paper to simulate a shelter.
Follow same steps as trial 1. Look at your paper.
Did the animal act differently now that there is a shelter
to run to? Did the animal look at the shelter? What
can you 'infer' from this?
Typing it out
:
Place
graphs from all groups on the board and discuss each graph and make
inferences together as a whole group.
Then
have each child record his/her group's findings and draw a picture
about what the cricket in the box did most often in each of
the 3 trials.
Author:
Maureen Jenner; Elem. Science Teacher, The Community School,
Sun Valley, Idaho
|