Includes updates and/or revisions. The influence of a federal report calling for a more orderly approach to teaching mathematics in the early grades will hinge largely on whether its message is ...

It’s surprisingly difficult to prove one of the most basic properties of a number: whether it can be written as a fraction. A broad new method can help settle this ancient question. In June 1978, the ...

I admittedly have very few skills when it comes to math. My second grader can run through long, complicated equations in his head, and I can barely wrap my mind around the new way they are teaching ...