UncleMath.com is free math learning web site for kids.
It has features like pinpointing mistakes in the answer/steps and also it can generates result/steps for the given problem. And unlimited practice is available on each topic.Also it has features for teachers. Teachers can create virtual class rooms, assign home work to students and monitor their progress.
Right now learning basic arithmetic is addressed. We are working on introducing more skills. Please provide your comments and feedback through our Feedback page.
For founder's profile please visit: me