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In this activity, learners shrink the scale of the vast solar system to the size of their neighborhood.

In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.

This is a classic exercise for visualizing the scale of the Solar System.

This activity guide features three related explorations to help learners ages 3-6 investigate shadows via the following science concepts: A shadow is made when an object blocks the light; you can chan