A really meaningful question in mathematics is: When are two things the same? What does “same” mean, and how does it change depending on the kind of math you’re talking about? For example, a set is ...

It’s very simple. Math looks like language. A funny language, I’ll admit. It’s dense, terse, and painstaking to read.

Here's why math fact fluency matters, and what we know from research about teaching strategies and timed exercises.

Galileo famously stated that our Universe is a “grand book” written in the language of mathematics. So why does our universe seem so mathematical, and what does it mean?

Results from a nationally representative EdWeek Research Center survey show how math teachers source materials and approach problem-solving.