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In this outdoor, sunny day activity, learners experiment with paper leaf models to discover how some desert plants conserve water.

In this outdoor activity, learners simulate an oil spill using popcorn (both oil and popcorn float on water), and estimate the spill's impact on the environment.

In this activity (on pages 29-35), learners examine water pollution and filtration.

Water treatment on a large scale enables the supply of clean drinking water to communities.

Learners explore the variables that affect the properties of ice and the places where different types of ice are found.

Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline.