Lectures and Demos

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"Though I don't have the luxury to travel around and observe other teachers' classrooms, I was able to learn different strategies and activity ideas from the lessons and teachers in your videos." http://www.learner.org/

Learner.org

Online Video Lectures and Course Materials — Open Yale Courses

http://oyc.yale.edu/ “Problems like the artificial heart are still unsolved, there's still room for innovation, to learn from science, and to design something better.”
An inspiring trip to Haiti and publishing educational materials that matter: read about it in the newest letter from executive director Cecilia d'Oliveira. http://ocw.mit.edu/index.htm

Free Online Course Materials | MIT OpenCourseWare

http://igniteshow.com/

Ignite Talk Videos

Ignite is a geek event in over 100 cities worldwide. At the events Ignite presenters share their personal and professional passions, using 20 slides that auto-advance every 15 seconds for a total of just five minutes.

Khan Academy

http://www.khanacademy.org/ Matrices, vectors, vector spaces, transformations. Covers all topics in a first year college linear algebra course. This is an advanced course normally taken by science or engineering majors after taking at least two semesters of calculus (although calculus really isn't a prereq) so don't confuse this with regular high school algebra.