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 ...

Count up/down on a number line. Explore a subtraction strategy. Engage in a Number Talk. Count up or down on an open number line. Explore a subtraction strategy and see if it helps you to subtract.

Your child continues to use tape diagrams as a visual tool to solve word problems. Your child continues to use tape diagrams as a visual tool to solve word problems. Now, he solves for an unknown in ...

Some of the biggest challenges in teaching math aren’t about the numbers and operations themselves, but students’ attitudes toward them. Getting students to think deeply about problems, persevere ...