This flipchart for the ActivBoard is a great way to introduce to your class food chains.
The flipchart walks through what a food chain is (the passing of energy) and how energy is passed from one organism to the next. The flipchart shows examples of food chains and explains key words: producer, primary consumer, secondary consumer, and tertiary consumer. It also has a food chain for students to come up and put together. At the end there is a review game.