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Twisted Tesselations
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In this activity (on pages 41-47 of PDF), learners explore tesselating geometric patterns (repeated shapes, similar to the art of M.C. Escher).
The Earth's Timeline
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In this group activity, learners will mark important developments of life on Earth on a timeline (each foot in length representing 200 million years).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-200.jpg?itok=8fxklY11)
Tricky Tangrams
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In this activity (on pages 49-54 of PDF), learners play with tangrams, a set of triangles, squares and a parallelogram that can combine into a larger square as well as all sorts of other shapes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-276.jpg?itok=0Ogz_YS-)
A Universe of Galaxies: How is the Universe Structured?
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This fun hands-on astronomy activity lets learners explore models of the Milky Way and other galaxies to get a sense of relative distances to other galaxies.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-866.jpg?itok=aeniFI_r)
The Thousand-Yard Model
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This is a classic exercise for visualizing the scale of the Solar System.