These efficient feedback strategies support student learning without sacrificing a teacher's nights and weekends.

The attack had been predicted for weeks, but over the last few days, the chatter was taken seriously enough that the U.S. ordered nonessential diplomatic personnel to evacuate the region. By the time ...

In the late 1960s and early 1970s, the American cartoonist Crockett Johnson created a series of paintings on mathematical subjects. They’re based on theorems, laws, and mathematical figures, but ...