Math fluency requires more than just memorizing facts and procedures, but also knowing how and when to use them.

Over the past two years, Strong has focused on what experts call “math facts.” Just as in language arts ... students are expected to also be able to do basic addition, subtraction, multiplication and ...

It's brilliantly odd math, provided by addition by subtraction. Math was never this fun in fourth grade. Nor this productive.

Students put all of their addition and subtraction skills together to solve equations. In this lesson, students put all of their addition and subtraction skills together to solve equations.

And while honeybees can't yet write out Einstein's general theory of relativity, new evidence suggests the clever little pollinators can perform simple addition and subtraction after a few math ...