This site provides full, customizable ‘FlexBooks’ and interactives for a wide range of ages and topics. Most of the materials are for STEM fields, but there are also resources for English and History.
“Free educational resources for middle school to college.” Over 6,800 free videos for learning math, sciences, social sciences, and the humanities.
“MIT OpenCourseWare (OCW) is a web-based publication of virtually all MIT course content. OCW is open and available to the world.”
OER is shorthand for Open Educational Resources – free resources that teachers are allowed to copy and adapt for their own purposes. The OER commons includes textbooks and entire courses, as well as individual lessons and activities.
Grades K-12 (primarily 9-12)