“The STEM Concept Videos, produced by the Teaching and Learning Laboratory, are designed to help students learn pivotal concepts in science, technology, engineering, and/or mathematics (STEM). Each video is part of a series that represents a cross-cutting theme in the courses that typically appear in first- and second-year engineering curricula (i.e., physics, mathematics, chemistry, biology”
You can see them on the MIT Open Courseware site. There are over 40 videos.
http://ocw.mit.edu/resources/res-tll-004-stem-concept-videos-fall-2013/videos/