What makes a tree a tree? Or rather, why can we recognize trees in even quite abstract depictions when they are so varied in nature? Researchers have found a clue in the branches, and used math to ...

Common Core math is getting the works from critics: It's too demanding for most kids; holds back the speedy kids; not the same as what parents already know; makes kids cry. It even promotes "fuzzy ...

The Common Core State Standards have vaulted into the national consciousness lately thanks to some high-profile dissenters, like Louis C.K. ("Kids teachers parents are vocally suffering.") and Stephen ...

A set of guidelines adopted by 45 states this year may turn children into "little mathematicians" who don't know how to do actual math. A few weeks ago, I wrote an article for TheAtlantic.com ...