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This marine biology activity (on pages 11-17) introduces learners to kelp (seaweed) forests that grow in the ocean and are home to many species of sea animals.

In this design challenge activity, learners add headphones to a previously built instrument (see "Build a Band" activity) to make it easier to hear.

In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.

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 separate the protein from milk and and use it to make their own glue.

Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.