I use Everyday Math at my school, and the teachers at my school have talked about the need to push for more mastery of basic facts (so for grade one, addition and some subtraction) since EDM doesn't spend too much time on that. I'd like to start doing weekly timed math tests to get my students to remember facts automatically. Does anyone have a resource (book or website) for math fact timed tests that they find particularly helpful? I'd ideally like something with many levels that I could move students through as they master each skill (0+ families, then 1+ families, etc). Thanks!