This is the second post (here’s the first one) about an approach to introducing the derivative to calculus students that is counter to what I’ve seen in textbooks and other traditional treatments of ...

To find the tangent line to a curve at a point P we first pick another point on the curve a little bit away from P. Call this point Q. Do this below by clicking "Another Point". Then connect these two ...

Sam Calavitta presides over what may be the noisiest, most spirited math class in the nation. He greets each student personally, usually with a nickname (“Butterfly,” “Batgirl” and “Champ” are a few) ...