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

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.

In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.

Learners explore water adhesion and learn about why water molecules are more strongly attracted to some substances than others.