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Scale Models
Source Institutions
In this activity, learners explore the relative sizes and distances of objects in the solar system.

Scaling an Atom
Source Institutions
In this activity, learners make a scale model of an atom to see how big or how small an atom is compared to its nucleus. Learners will realize that most of matter is just empty space!

The Pull of the Planets
Source Institutions
In this activity, learners model the gravitational fields of planets on a flexible surface.