This article presents a way of studying the rationality that mathematics teachers utilize in managing the teaching of theorems in high-school geometry. More generally, the study illustrates how to ...

I once asked a colleague if he’d read a particular book. “Read it?” he replied incredulously. “I haven’t even taught it!” A former college English professor, he came by the joke honestly. The first ...

A new report from the National Council on Teacher Quality (NCTQ) finds that only one in eight elementary teacher preparation programs nationwide devote enough time to teaching fundamental math content ...