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Learners experiment with water gel crystals, or sodium polyacrylate crystals, which absorb hundreds of times their weight in water. When in pure water, the water gel crystals cannot be seen.

In this simple demonstration, learners investigate the properties of air pressure. Learners place an index card on top of a glass full of water, then invert the glass.

In this simple activity, learners investigate refraction by placing a picture of an arrow behind a glass of water.

On an airplane trip, learners have an opportunity to investigate the properties of air pressure at different altitudes.

In the kitchen, learners can perform their own density investigation.