Great Practice App!

This app is just what I was looking for as a way to help students fill in holes in their computation understanding. The Problem Solver feature does a nice job of breaking the computation algorithms down (and by place value!). The only complaint that I have is that there is no way to erase a mistake without erasing all of your work when using the chalkboard feature. Please put in an eraser! Ive had a few students get discouraged after making a mistake and having to rewrite their entire computation to fix it.

Ditopher about MathBoard