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Unit Plan: Who Eats What? Lesson: 8 Time: Session 1 (40min) and Session 2 (40min) Setting: Classroom Objectives:

Students make food webs of their study site, then trace how a change in one population could affect other populations within the web.

Overview
Rating:

Lesson Overview:

Students will be able to:
- know that most animals eat and are eaten by more than one thing
- understand that a food web shows all the likely feeding relationships at a location
- explain the different ways a change in one population can ripple through a food web

Materials:

Sessions 1 and 2
For the Class:

  • overhead transparency of "Food Web"
  • overhead marker
  • 20-30 buttons or bean, two colors (optional)
  • food chains from Day 6 (Making Food Chains)
  • master list of study site organisms from Day 3 (Outdoor Research Excursion)
  • several copies of the Who Eats What  guide
  • other resource books (see "Resource List")


For each group of 3-4 students:

  • materials for making food webs
Lesson Resources:
Benchmarks for Science Literacy: 5D Interdependence of Life 5E Flow of Matter and Energy 7D Social Trade-offs 11B Models NYS Standards: MST 2- Informational Systems/ Information Technology MST 4- Physical setting, living environment and nature of science

Hogan, Kathleen. Eco-Inquiry: A Guide to Ecological Learning Experiences for the Upper Elementary/Middle Grades. Kendall/Hunt Publishing Company, PO Box 1840, 4050 Westmark Drive, Dubuque, IA 52004-1840., 1994.