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Learners mix a solution of luminol with hydrogen peroxide to produce a reaction that gives off blue light.

In this classic memory game (on pages 37-45 of PDF), learners turn over tiles to reveal images on the back.

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

Learners investigate the properties of the liquids in two bottles. One contains layers of oil and water, and one contains oil, water, and soap.