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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.

During this activity, learners will make different versions of "ooze" using varied proportions of detergent and glue.

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 add dilute bleach solution to water that has been dyed with yellow, blue, and green food color.

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

In two separate bags, learners mix water with Epsom salts and detergent.

In this activity, learners mix several sugar solutions to investigate the property of density. Each sugar solution has a different density and color of the rainbow.