Life Science

S4L1. Students will describe the roles of organisms and the flow of energy within an ecosystem.

a. Identify the roles of producers, consumers, and decomposers in a community.
b. Demonstrate the flow of energy through a food web/food chain beginning with sunlight and including producers, consumers, and decomposers.
c. Predict how changes in the environment would affect a community (ecosystem) of organisms.
d. Predict effects on a population if some of the plants or animals in the community are scarce or if there are too many.


National Wildlife Federation has lots of sites available to choose from. (S4L1)

Food Chains - an interactive site for food chains from BBC Bitesize

Gould League Food Webs - an interactive website that lets students build their own food web using one of four categories: Australian grassland, African grassland, Antarctic, and Marine. (S4L1b)

Kids Corner Food Chain Game: allows students to create progressively more complex food chains - includes a mixed aquatic and terrestrial food chain. (S4L1b) has a page with lots of information and explanations about both food webs and food chains. Note: the “activity” pages are worksheets only and not interactive. (S4L1a, S4L1b, some S4L1d)

Build a Food Web Gamedownload the pdf for the activity (S4L1b)

Great Smart Board lesson that covers it all (S4L1a, S4L1b, S4L1c, S4L1d)

Crowding in an Ecosystem – project using radish seeds and milk cartons (S4L1d)