There are some basic properties of numbers any 3rd grader can tell you: Each number is represented by a single symbol, and followed by a single successor. Multiplication makes a number bigger; ...

Many students cruise along just fine in math until fourth grade or so. Then, they hit a wall—fractions. The wall is about to get taller. With mastery of the topic seen as a crucial stepping stone to ...

Right about now, your kids are probably enjoying their summer vacation with plenty of time floating around in the pool or at the beach. It’s hard to believe school starts in about a month for many ...