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Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.

In this chemistry challenge, learners identify which plants have the enzyme "catalase" that breaks hydrogen peroxide into water and oxygen.

Many of the genetic sequences found in the fruit fly genome are similar to those found in humans.

In this playful, goopy activity, learners mix two liquids to create a solid (that sometimes acts like a liquid ), using basic household materials such as borax and glue.

In this activity (on page 8), learners model how marble statues and buildings are affected by acid rain.

Learners design their own experiment to investigate how pollution diffuses through ground material.

In this experiment, learners will conduct chemical and physical tests to identify mystery substances.

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

This lesson gives full instructions for making cabbage juice indicator, a procedure sheet for learners to record observations as they use the indicator to test materials, and extension activities to d