There is no shortage of popular books and lectures on math—but they can only teach us so much. Mathematics has long been presented as a sanctuary from confusion and doubt, a place to go in search of ...

A new group billing itself as a “Consumer Reports for school materials” will soon begin posting free online reviews of major textbooks and curricula that purport to be aligned to the Common Core State ...

Using words like ‘factors,’ ‘denominators’ and ‘multiples’ may be part of a constellation of good math teaching practices.