My favorite website for help teaching math is Chris Woodin’s. He is one of the nation’s experts on teaching math to children with challenges. A teacher at the Landmark School, his website is full of useful ideas.
For short educational video lessons, Khan Academy cannot be beat. Sal Khan started making videos to help tutor his nieces and nephews on the opposite coast. His project grew to over 2,600 videos covering K-12 math, plus biology, chemistry, and physics, and now branching into finance and history. To learn more about the founder, how we started, why it helps different kinds of kids, and where it is going. here is his TED talk.