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In this activity, learners explore how engineers design devices that can detect the presence of pollutants in the air.

In this activity, learners investigate balance and symmetry by designing a symmetrical butterfly, using a paper cutout.

In this activity, learners examine ways that Native Americans of the Southwest express their relationship with nature through art.

In this lab (Activity #1 on page), learners explore how we see color.

In this hands-on activity, learners investigate the functional design of leaves on a tree.

In this activity, learners will examine a variety of seeds, describe them, and determine how they are dispersed.