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In this activity, learners work in pairs to measure each other's ankles with lengths of string.

Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

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 activity, learners sort different natural phenomena into categories (they occur on Earth, on the Moon, or on both), and then model how energy moves during a quake using spring toys.

In this activity, learners will make their own prism and use a glass of water to separate sunlight into different colors.