A set of pentominoes is a mathematical tool consisting of twelve pieces. Each peice is made up of five squares that share at least one side. Pentominoes are used by mathematicians around the world to explore ideas about geometry and numbers. Pentominoes are named after letters in the alphabet, although they don't all look exactly like their names. With a little practice, they can be used as puzzle pieces and put together into thousands of different rectangles of many sizes and shapes.
Click on the pentomino picture below to access a website in which you can test your pentomino skills!