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Rocks are made of minerals, and minerals often have crystal shapes. In this fun activity about geometry in nature, learners create their own crystal shapes out of paper.

1 cent - $1 per student Ages 8 - 18 45 to 60 minutes
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Learners display their findings after a study of surface area and volume. They build a mobile to show a commercially available box and a constructed cubical box of the same volume.

1 cent - $1 per student Ages 11 - 14 1 to 2 hours
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In this activity, learners build a paper stellated rhombic dodecahedron, a three-dimensional 12-pointed star.

1 cent - $1 per group Ages 11 - 14 1 to 2 hours
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This math activity exposes early learners to a variety of three-dimensional objects. Learners bring geometric solids (everyday objects) from home.

free Ages 4 - 6 10 to 30 minutes
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In this activity, learners follow simple directions to explore and create platonic solids.

1 cent - $1 per student Ages 11 - 18 30 to 45 minutes
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Learners determine the surface area and volume of two identical boxes, and then figure out the dimensions of a cubical box with the same volume.

1 cent - $1 per student Ages 11 - 14 2 to 4 hours