Big Dodecagon

A classic activity is to cover a 1-inch-side dodecagon with pattern blocks. This provides a great context to discuss symmetry (see Geometry Labs 5.6.)  Here is one way to do it:

See many others, found by Simon Gregg’s students.

In the past few days, I’ve had fun making a double-size, quadruple-area dodecagon:


You too, and your students, can play this game! Download the big dodecagon, and get started!


PS: Visit my Pattern Blocks home page!
…and my new Dodecagons page! (More images, and some math questions for your students to ponder.)

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