A Tangram is a tricky set of seven geometric shapes made up of two small triangles, one medium triangle, two large triangles, a square, and a parallelogram.
The tangram puzzles used in the experiment along with their solutions.
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Two example tangrams, each with two different annotations. Each
Explore shape, size, comparison, spatial reasoning, patterns and designs using these brightly colored plastic geometric puzzles. Ages 5-12.
Tangrams - Set of 4