I started relearning arithmetic and mathematics this summer after seeing a remedial program for elementary school subjects on ...

In elementary school arithmetic, I was marked wrong for reversing the order of multiplication. Every time this topic comes up ...

Consider this sequence of numbers: 5, 7, 9. Can you spot the pattern? Here’s another with the same pattern: 15, 19, 23. One more: 232, 235, 238. “Three equally spaced things,” says Raghu Meka, a ...

A key part—though surely not the only part—of early-grades math is ensuring students get the basic arithmetic functions down and, beyond that, making sure they’re able to swiftly and automatically ...