The videos are just one part of the academy. There is a tree you progress through by passing off problems. Ten correct in a row marks you as proficient and yo

The videos are just one part of the academy. There is a tree you progress through by passing off problems. Ten correct in a row marks you as proficient and you go to the next level. Every so often there is a review section with random problems from any earlier level. The entire system of instruction, practice, and review gives more than an illusion of understanding. My nine year old's grades have always been really good. The fun for him is just being able to go as fast as he wants. My 14 year old has moved from struggling for c's to breezing along with b's. She just really doesn't care about math but at least she doesn't hate it anymore.