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In this activity, learners explore acids and bases by preparing six solutions that combine vinegar and ammonia, ranging from acid (all vinegar) to base (all ammonia).

In this activity, learners model the gravitational fields of planets on a flexible surface.

This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing).

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

In this hands-on art activity, learners will study and identify features of the external anatomy of a fish.

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