Teaching activities for eco systems and habitat interactions for 3rd grade. Habitats can mean many things but most importantly, a habitat is where the animal lives much of the time. Habitat and biomes are similar with the exception that biomes are divided into geographical regions and although an animal will live in the region, sometimes it will be in a cave or underground or in the lake. Here are some basic worksheets for animal habitats at the early grades. See also the biome worksheets.