Pentominoes are shapes formed by connecting five squares together in different ways. There are many interesting puzzles that you can create with these simple pieces.

- Cut out the pieces from the pattern (out of boxboard, cardboard or craft foam sheets).
- Try to arrange the twelve pentominoes to form an 8 × 8 square (like a chess board) with the middle four squares left blank.
- Try to arrange them into an 8 × 8 square with a square missing from each corner.
- Try to arrange them into a 6 × 10 rectangle. Try a 5 × 12, a 4 × 15, and a 3 × 20 rectangle.

- The twelve shapes represent all the possible ways you can connect five squares along their edges if you don't count reflections.
- Pentominoes and other "polyominoes" were invented by Solomon Golomb when he was a 22 year old graduate student at Harvard.

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