What makes the OER Project different is that it is far more than worksheets and videos. It offers complete courses, including the equivalent of online textbooks for students, coupled with instructional support and professional development for teachers. Every course is available free, online, for any educator who wants it. All of the content is aligned to state standards and created by well-known subject-matter experts and master teachers. (Here’s a list of the OER Project’s creators and advisory board of scholars and historians. Although I fund the project, I am not involved in creating the content.)