The best way to practice math is to play with it — to use the patterns and connections between math concepts in your pursuit of something fun or beautiful.

So this art project is a great way to practice multiplication. Use the prime factors of numbers from one to one hundred to create a colorful design.

### Start with a Hundred Chart

First, download this printable file of hundred charts in non-photo blue (or light gray, if you’re printing in grayscale). The file includes:

- Line-by-line traditional chart, counting from top to bottom.
- Line-by-line bottom’s-up chart, counting from bottom to top.
- Ulam’s Spiral chart, spiraling out from the center.
- Blank grids for making your own patterns.