Pentomino Set
A sketch to play with pentominoes in GeoGebra.
Many interesting math problems can be posed about these shapes, and they can be used to make fun puzzles or surprisingly challenging ones.
Got inspired to make these from a set made by David Chandler and shared at the Math Future Google group. https://groups.google.com/forum/#!forum/mathfuture
This same sketch with a few problems added is also on the tube: http://www.geogebratube.org/material/show/id/56711
If you just want the tools to make your own sketch, the .ggt file is at: http://www.geogebratube.org/material/show/id/56726
More GeoGebra at mathhombre.blogspot.com