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Learners take on the role of environmental engineers as they design water filters.

In this activity, learners explore how environmental engineers might approach solving the problem of an oil spill.

Learners design their own experiment to explore the permeability of different materials such as soil, sand, gravel, and marbles.

In this activity, learners of all ages will design a functional bird feeder using familiar, every day materials.

Learners participate in a variety of activities modeling different disabilities.

In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.

In this game (on pages 14-21), learners explore how each human being inherits genetic traits such as eye color.

Learners use red cabbage juice and pH indicator paper to test the acidity and basicity of household materials. The activity links this concept of acids and bases to acid rain and other pollutants.

As a model of acid rain, learners water plants with three different solutions: water only, vinegar only, vinegar-water mixture.

Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.

Build and test a scale model of a rainforest canopy walkway.

In this activity, learners investigate the history and development of agricultural biotechnology.

In this activity, learners design a therapeutic agent to image and/or cure various diseases in the respiratory system.