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In this activity, learners will construct a measuring device (snake "string") to improve their observation skills.

In this activity, learners play a card game that explores different size scales--macro, micro and nano.

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.