Usage: Check out the code, then open up canvas_test.html in your browser. Input an equation, and mess around. We'd love feedback, so leave us some comments over on the blog at http://rcos-touch-of-math.blogspot.com/ You can move terms and operators across an equals sign. Also, to use the merge without touch, enter the indices of the two terms. For example: 1+2+3 = a To merge 1+2+3, enter 0 and 4, and click to see it happen. On a touch screen, just move your two blocks closer together.