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This is a hands-on activity exploring how nanoscale particles are used in mineral sunblocks to increase their transparency.

In this activity, learners will learn about a person they admire (famous, family or otherwise) or even themselves and create a life-sized silhouette.

By making models of light waves with paper, learners can understand why different colors appear in bubbles.

In this activity (11th activity on the page), learners use their sense of touch to identify matching pairs of objects hidden in bags. Learners can also play this game with partners.

Learners will explore the concept of angular distance, and investigate why the moon appears to be the same size as the sun during a solar eclipse, despite the sun being much larger.

In this artistic activity, learners blow up a smaller picture into a larger one, by using a grid.

In this story time program, young learners listen to the Dr.

In this activity, learners investigate how geometry plays a role in perspective.

In this activity, learners investigate visual perception as well as plan and conduct their own experiments.