About Us

Are you trying to learn multivariable calculus? Leading Lesson has study guides that show you the facts and skills you need. To practice any fact or skill, click on it to see some practice problems. Each problem comes with a solution that details the problem solving process.

Paul Hand

All solutions are written by Dr. Paul E. Hand. He has been an instructor of applied mathematics at the Massachusetts Institute of Technology. He received his Ph.D. in mathematics from New York University, where he was awarded the Friedrichs Prize for outstanding dissertation. He has taught math classes at MIT, NYU, and the Cooper Union.