Mathmaster.org is a free resource for your school where students can make use of the extensive video library (Khan Academy) and endless supply of printable math worksheets from any computer with access to the web. The video library covers K-12 math, science and other topics. Each video is approximately 10 minutes long and easy to follow. The website gives you the ability to easily customize each worksheet to target your student's specific needs
Math videos - Algebra, Calculus, Algebra 2, graphing calculator, etc. Another great resource for math students. Add them to Khan Academy and you have quite a number of math screencasts.
Powerful add-on to Office 2013 - screen recording of anything on your screen, voice over PPTs, video recording of you in the presentation, create quizzes and embed them, embed Khan videos & practice problems, CK12 lessons, etc.