Last week I shared a list of

ten good sources for math videos. Over the weekend I was contacted by someone suggesting that I take a look at

Math Is Power 4 U.

Math Is Power 4 U is a large collection of tutorial videos primarily covering topics found in middle school and high school math courses. The videos are short and direct. You could make very similar videos yourself, if you wanted to. The best aspect of Math Is Power 4 U is the

searchable database of videos. The database, hosted by

Phoenix College, makes it easy to quickly find a video explaining topics in arithmetic, algebra, geometry, calculus, and half a dozen other topics.

**Applications for Education**
If you had the time, you could make very similar videos yourself using a tool like

Screencast-O-Matic. But before doing that, take a look through

Math Is Power 4 U database to see if there is a video available that meets your students' needs.