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In this math lesson, learners use hinged mirrors to discover that regular polygons are composed of triangles tessellating around a center point.

In this math lesson, learners use a variety of manipulatives to explore spatial relationships of squares and their transformations.

In this activity, learners will engineer a new shape and use it to create a new pattern with no wasted space.

In this activity, learners repeat patterns in two and three dimensions to create tessellations.

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.

In this activity, learners slide shapes to create unusual tiled patterns.