A series of math tutorials by "qualified, creative individuals." The tutorials are relatively short, and broken down into single concepts. Teachers are invited to share their own videos. Unfortunately, though the tagline says "Choose your lesson. Choose your teacher," it is difficult to find citations/teacher credits for individual lessons.
The company offers several product lines, including the Plato product, which is self-paced intervention. At the post-secondary level, courses include both developmental ed and adult ed.
By LaGuardia's Center for Teaching and Learning (also cited here), this site provides tutorials as well as samples for students and faculty interested in ePortfolios. See lagcc tag for related bookmarks.
"Whether you're a student building your ePortfolio, an educator using ePortfolios for teaching and learning, or you're interested in the growing ePortfolio field, we invite you to explore the many resources available here at ePortfolio@LaGuardia. "