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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.

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.

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.