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This quiz lets you estimate your annual radiation exposure.

During this activity, learners will make different versions of "ooze" using varied proportions of detergent and glue.

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

As a group, learners investigate three packages which are all the same size and shape, but have different contents. One is filled with foam, one is filled with wood, and one is filled with metal.

In this activity, learners add dilute bleach solution to water that has been dyed with yellow, blue, and green food color.

In two separate bags, learners mix water with Epsom salts and detergent.