OCW projects first appeared in the late 1990s , and after gaining traction in Europe and then the United States have become a worldwide means of delivering educational content .
OpenCourseWare ( OCW ) are course lessons created at universities and published for free via the Internet .
OCW projects first appeared in the late 1990s , and after gaining traction in Europe and then the United States have become a worldwide means of delivering educational content .
OpenCourseWare ( OCW ) are course lessons created at universities and published for free via the Internet .