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In this design challenge, learners use their creativity and imagination to design and test a wildlife crossing for their favorite animal.

This guide outlines how to plant a garden even if you don't have a yard!

In this activity, learners will build a design and build a place for pollinators to drink from.

Have you noticed the plastic rings that are used to hold six-packs of soda? Those rings are great for carrying cans, but they're real trouble when they become trash that animals can get tangled in.

In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

In this activity, learners construct possible food webs for six different ecosystems as they learn about the roles of different kinds of living organisms.

In this physical sciences activity, learners explore how forensic investigators collect prints from a crime scene. Learners make hand impressions in damp sand and analyze the patterns they observe.

In this activity, learners explore the web of connections among living and non-living things.

This activity (on pages 19-24) introduces learners to the rain forest's layers—emergent, canopy, understory, and forest floor—and has learners make paper lianas (vines that live attached to trees) and

In this activity, learners will experiment to find how long it takes to compost paper. They will create their own compost container and test different variables.

In this environmental health activity, learners grow and observe bread mold and other kinds of common fungi over the course of 3-7 days.