Color-Metric Designs: a coloring book of isometric designs for ages 10+

Color-Metric Designs is not just another coloring book - it features 26 abstract isometric designs for ages 10 and up. The designs are 2d sketches of 3d objects. Once you color them in, they pop off the page at you. Color-Metric Designs is fun and artistic. It's educational, allowing people to explore geometry, spatial reasoning, and perspective. And proceeds from every purchase will be donated to support math education in the United States.