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In this chemistry activity, learners will test the pH of various foods and household substances using cabbage.

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 activity, learners test exhaled breath for carbon dioxide and learn how to use an indicator as a simple way to measure pH.

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

Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.

In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.

In this activity, learners discuss the different salinities of oceans, rivers and estuaries.