Technology

This is a nice collection of mathematics-themed documentaries:

http://www.cosmolearning.com/mathematics/documentaries/

There are 30 or so documentaries here, many from the BBC’s Topics in the History of Mathematics, such as Non-Euclidean Geometry and the Birth of the Calculus.

Other documentaries of interest include biographies of Florence Nightingale (whose contribution to statistics is often overlooked) and John Nash (Nobel prize winner and subject of the film A Beautiful Mind).

There are also a number of traditional lecture series available as well.

Like most every other internet user, I often end up at Wikipedia.org for one reason or another.  Yet I never realized that Wikipedia offers Portals for various categories, like Mathematics:

http://en.wikipedia.org/wiki/Portal:Mathematics

In addition to functioning as a doorway to the vast amount of mathematics available in wikipedia, the portal also offers up selected articles from the archives, a collection of clickable fun facts, and a Picture of the Month.

Desmos is a powerful, versatile, and free online graphing calculator.

Desmos combines the typical functionality of a graphing calculator with dynamic representation capabilities.  The result is an intuitive and powerful tool for demonstrating and exploring mathematics.

Desmos is one of the best things to happen to math in years!  It has quickly become an essential part of my math classroom.

Check out the software itself at Desmos.com.

And you can see some of the ways I use Desmos in and out of the classroom here, including resources from my Introduction to Desmos workshops.