As we all aware about MIT opencourseware, OCW Scholar is another initiative under Opencourseware
Excerpt From MIT Opencourseware site
OCW Scholar courses are designed for independent learners who have few additional resources available to them. The courses are substantially more complete than typical OCW courses and include new custom-created content as well as materials repurposed from MIT classrooms. The materials are are also arranged in logical sequences and include multimedia such as video and simulations.
more on the OCW Scholar resources visit the below link