Learn how to use first, then and now stories to understand addition. First, then, now (subtraction) Learn how to use first, then and now stories to understand subtraction problems. Subtraction within ...

The common-core math standards require that students learn the standard algorithm for multi-digit adding and subtracting—you know, the process in which you line the numbers up vertically to add or ...

Education experts have a solid answer. If kindergarten is about transitioning away from the play-based learning of preschool, then first grade is about stepping fully into the world of academics. “The ...