Over the past 20 years of teaching at Haaff Elementary in Pueblo, Angie Casados noticed a steady decline. It wasn’t a drop in grades or lack of care from students, but rather a battle with holding ...

Imagine winding the hour hand of a clock back from 3 o’clock to noon. Mathematicians have long known how to describe this rotation as a simple multiplication: A number representing the initial ...

SIAM Review contains articles that are written for a wide scientific audience. Articles include expository or survey papers focusing on important advances in applied or computational mathematics, or ...