by Carol Giles
Objectives: To interpret a food chain
The Scenario: Aphids are tiny organisms that eat pea plants. Beetles eat aphids, spiders eat beetles, and some birds eat spiders.
What would you do to increase your pea harvest?
A. Introduce more spiders into your garden
B. Introduce more aphids into your garden
C. Reduce the number of spiders
D. Reduce the number of beetles
* Illinois Goal Assessment Program: Sample Test of Illinois Goals in science, 1992