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In this activity (on pages 20-23 of PDF), learners build a model of a power plant using simple materials.

Learners create a model of a wetland to observe how it absorbs and filters water from the environment.

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 outdoor activity, learners become beachcombers as they walk on a sandy beach in search of evidence of life.