MASTER Tools, developed by The Shodor Education Foundation, Inc. are the result of on-going collaborations with the National Center for Supercomputing Applications (NCSA), George Mason University, and other education organizations. They are designed to be interactive tools and simulation environments that enable and encourage exploration and discovery through observation, conjecture, and modeling activities.

The goals of Interactivate are the creation, collection, evaluation and dissemination of interactive Java-based courseware for exploration in science and mathematics. Indexed to the Common Core Standards, these materials are integrated into the National Science Digital Library.