Did you know there are more ways to shuffle a deck of cards than there are atoms in the universe? Seems crazy, but it's true. Today The Why Files covers amazing math facts (and tricks) that will ...

Best Math Games for 2nd Grade Last updated: July 9, 2025 by Christine Elgersma It seems like just yesterday your kid was learning 1 + 1 = 2, but now your second-grader has moved on to new challenges.