Kahn Academy

A great teacher resource, especially at the high school level, are the Kahn Academy videos. Salman Khan, the creator of these learning videos, focuses on math, science and finance with a little bit of history and economics thrown in on the side. Currently there are about 1,400 videos available that would serve well as homework assignments, homework helpers and possibly to accommodate different learning styles. The videos are discipline specific and not supportive of cross-curricular or project-based learning, nonetheless they are thorough over a broad range.