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The Four-Square Quilt
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In this activity, learners arrange triangles together to make patterns to create paper quilts. Learners experiment with arranging the triangles in different ways to make various designs.

Speedy Shelter
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In this design challenge activity, learners invent an emergency shelter that can fit a person and is sturdy and quick to build.

Gumdrop Dome
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In this engineering activity, learners construct sturdy geodesic structures out of gumdrops and toothpicks. Use this activity to explore engineering principles as well as sturdy shapes and triangles.