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Interactive
NASA

Nasa: Astronomy Picture of the Day: Scale of the Universe 2

For Students Pre-K - 1st
This stunning interactive allows you to explore everything in this universe by zooming into different objects, organisms, and microscopic matter.
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Lesson Plan
American Geosciences Institute

American Geosciences Institute: Earth Science Week: Make Your Own Powers of Ten

For Teachers 9th - 10th
Watch Charles and Ray Eames's Powers of Ten video, and then create a similar project while exploring scale.