I never liked ST Math. It is boring, repetitive, and some of the puzzles are absolutely ridiculous. I have trouble visualize a perfect right angle, and I'm college educated! But if you don't get it perfect on the screen? Sorry! Wrong! I'll admit, there are some instances where I think it has been helpful. But if they would just teach the kids math in class the way we learned it when I was a kid, this wouldn't be necessary. And what is the point to not giving instructions for the puzzles? To frustrate everyone?