The Science Penguin: Teach It: Ecosystems and Food Chains Third Grade: Being part o a group helps animals obtain food defend themselves, and cope with changes. Groups may serve different functions and vary dramatically in size.
Here's an idea for creating a food chain on a ribbon. IArrows show flow of energy. Use with Apologia Zoology, Apologia Flying Creatures, Apologia Swimming Creatures, Apologia Land Animals for homeschool science
From Mystery Science: Food Chain Activity - free hands-on science activity for and grade elementary kids. Part of a complete unit on Ecosystems: Ecosystems & the Food Chain. Meets Common Core and NGSS.