The best way for students to understand the flow of energy in food chains and food webs within ecosystems is for them to actually BUILD them and analyze them! This pack allows students in four different activities to learn about rainforests, forests, oceans, and freshwater ecosystems as they create food chains and food webs. Each activity progressively gets more difficult, starting with completing a food chain, then a food web with arrows placed, moving to a food web that doesn't include arrows