I present my first math quilt: The Pythagorean Theorem.
Who doesn't love a-squared + b-squared = c-squared?
In April 2012 the Austin Modern Quilt Guild held a Color Wheel Charm Pack Swap. I bought "2 spots" and ended up with 112 charm squares. I didn't know what to do with the fabrics until this fall, when I began teaching geometry. I was repeating "Pythagorean Theorem" and "a-squared plus b-squared equals c-squared" so often, that this quilt was designed in my sleep! My friend Cindy had made a Pythagorean quilt in 2011 and I wanted something similar, but bigger.
The backing is another Marimekko fabric from the Crate and Barrel Outlet. I love that the fabric is wide enough so no piecing is required on the back. Only drawback: it bleeds! It needs to be washed with multiple color catchers.
For quilting I went out of my comfort zone: matchstick quilting! All the negative space was quilted about 1/3 of an inch apart, along different diagonal lines. The number of quilting lines used in the blocks represents that section's squared number.
9 yellow blocks: 9 quilting lines. 16 red blocks: 16 quilting lines. 25 blue blocks: 25 quilting lines.
3-squared plus 4-squared equals 5-squared
Overall, I love it! And I love the equilateral triangles fabric that I included on one part of the binding.