I am pleased to announce a new sponsor from OpenCollege on A Lean Journey Blog. OpenCollege e-Learning Content Library is the ultimate resource for the Internet-based education of the future. It provides online course developers, teachers, and students with access to more than 700 interactive learning models covering the following subjects: Biology, Chemistry, Algebra, Calculus, Geometry, Astronomy, Physics, Economics, and many more.
OpenCollege was launched in 1993, when OpenTeach Software joined efforts with faculty members of several European universities to create an interactive educational system. Today, OpenCollege is a comprehensive online library with a convenient Web-based interface and a full capacity to support online learning.
So if you are looking for a resource to supplement your learning in these areas then I would try OpenCollege. Refer to their catalog for a complete listing of all the content in the library.