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Canine House of Cards
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This simple construction activity teaches the importance of architectural structure. Learners build and test designs for a paper "doghouse" strong enough to hold the weight of a jumbo dog biscuit.

Loopy Geometry
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Discover geometry by creating shapes from loops of paper. In this activity, paper loops transform to give you totally new structures when you cut them.

Geometry: Let's Face It
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In this math lesson, learners identify, describe, and construct the five regular polyhedra.

Beyond Dominoes: Polyominoes
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In this activity, learners add squares to paper dominoes to make polyominoes.

Exploring a Complex Space-Filling Shape
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In this activity, learners build a paper stellated rhombic dodecahedron, a three-dimensional 12-pointed star.

Reflections
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In this activity, learners play a game and use pattern blocks to explore mirror images and reflection.

Turning the Tables
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In this activity, learners explore geometry and spatial relationships as they figure out how to arrange tables for a party.

Exploring Tessellations (Grades 3-5)
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In this activity, learners repeat patterns in two and three dimensions to create tessellations.

Tri, Tri Again
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Learners estimate how many small triangles will fill a larger shape. Then they use a triangle stamp (or stencil made from a file folder) to fill the larger shape with triangles.

Cut-Fold-Staple
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In this activity, learners discover how to rotate a flat shape into the third dimension. Learners draw and cut out a shape that has at least one straight edge on an index card.

Symmetry Fold-Overs
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In this math activity, learners experiment with the concept of symmetry.

Build A Dome
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In this activity, learners explore the structural strength of triangles by creating their own free-standing geodesic dome out of plastic straws.

Bubble Sculpting
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In this activity, learners develop spatial reasoning skills as they blow bubbles and observe what happens when the bubbles connect.

Shape Detectives
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In this activity, learners cutout a set of shape finder templates to explore shapes in the world around them.

Special Effects: Titanic and Beyond
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In this activity, learners investigate how geometry plays a role in perspective.
Building Houses: Build a Cardboard Tube House
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Build a house you can fit inside, using cardboard tubes.

Exploring Tessellations (Grades K-2)
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In this activity, learners repeat patterns in two and three dimensions to create tessellations. This activity combines the creativity of an art project with the challenge of solving a puzzle.

Burst a Bubble
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In this activity, learners will create their own bubble solution. Learners will explore chemistry, geometry and trial and error through this activity.

Building Three-Dimensional (3D) Structures
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In this activity, learners practice drawing 3D structures in two dimensions. Learners draw cube stacks from five different points of view.
One-Cut Paper Stars
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Here's a very simple activity if you have paper and scissors: make one cut, unfold, and you have a beautiful star! A great way to learn about polygons and origami mathematics.