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This is a quick activity (located on page 2 of the PDF under Nasturtium Leaves Activity) about surface tension.

This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

Learners act as engineers and design mini submarines that move in the water like real submarines.

In this activity, learners play with surprising sand that doesn’t get wet! Learners explore how water behaves differently when it comes in contact with "magic sand" and regular sand.

In this fun hands-on activity, learners use simple materials to investigate evaporation. How can the evaporation of water on a hot day be used to cool an object? Find out the experimental way!

In this activity, learners use found natural materials to create a water haven for bees and other insects.

In this activity, learners create secret messages using a candle. Learners discover that watercolor paint is attracted to some materials, like paper fibers, but not others, like oil.