Pentominos
What do pentominos have to do with geometry?
Can you do it?
Download the Challenge file and see if you can do any of the challenge puzzles. They can be done, but they are very difficult!

If you prefer, one of the challenges can be done electronically by using either of the following:

Play Pentominos -This has three different levels of play.

Pentominos applet. This challenge is the 6 by 10 grid which is the most difficult; in this applet the pentomino movements are the most flexible.