As each organism is identified in the food web the yarn is unwound and stretched from organism to organism thus making a complex food web. They may use the same producer for all three chains or choose different producers. Students should then label their food chain organisms as producer, first order consumer, and second order consumer. Students then develop these food chains into a workable food web for the community they chose. Have the students tell the role of decomposers in a food web.
All food chains begin with a green plant.
Look up photosynthesis and explain how a green plant gets its energy. Draw and explain a pyramid of numbers, a pyramid of biomass, and a pyramid of energy. A game activity in which the students are given the name of an organism in a food chain. When an organism chooses a successive organism in the food chain they enter the circle.