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Digging Into the Past
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This activity (on pages 23-27) lets learners simulate the work of scientists who take core samples of Earth's rocky layers to determine geological history.
Invent a Plant
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In this activity, learners construct models of plants that are adapted to living under specific environmental conditions.
How Greenhouse Gases Absorb Heat
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Learners observe two model atmospheres -- one with normal atmospheric composition and another with an elevated concentration of carbon dioxide.
Mystery of the Disappearing Cottonwoods
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Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline.