TryEngineering
Computing in the Cloud
What and where is "the cloud"? The lesson teaches scholars about the history of cloud computing and about its current uses. It also teaches how to install a multiple guest OS in a host OS and how to use cloud computing services.
Purple Math
Purplemath: How Do I Compute My Grade?
Demonstrates how to figure out what you need on the Final to pass your course, given a typical grading scheme.