Helping students to develop math fluency takes more than just flash cards. It requires teaching them how to think about ...

For over a decade, mathematicians have failed to agree whether a 500-page proof is actually correct. Now, translating the ...

When counting squares in a grid, don’t stop at the smallest boxes; the bigger ones are hiding too. The rule is simple: In an n × n grid—where n is the number of squares both horizontally and ...