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In this activity, learners make a flip book that shows the progression of two solar events on reversible sides of the flip book.

In this activity, learners observe the moon each night for a month and draw their observations in a Moon Watch Log.

In this activity, learners construct a home-made journal with simple, everyday materials.

In this activity, learners explore how the area of Arctic sea ice has changed over recent years. First, learners graph the area of Arctic sea ice over time from 1979 to 2007.

Learners follow a three-step process to start their own rock collection.

This activity (on pages 13-18) has learners build a model tree and then figure out how to make their tree stand up by itself.

In this activity, learners turn empty 2-liter bottles into a see-through compost container.

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 construct models of plants that are adapted to living under specific environmental conditions.

In this activity, learners model how the Moon's volcanic period reshaped its earlier features.