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!

--Henri

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