I cannot say enough good things about Fast Facts!! I searched for a fun way to practice math facts daily – each kiddo at their own level – without knowing they were at different levels — THIS IS IT! Now, timed materials can be a bad thing, I’ve had parents complain that timed work gives their kids anxiety and I get that! But it all depends on how it is delivered. THIS WORKS. This is FUN. Every single one of my first graders LOVE fast facts!