With the kind support of the National Science Foundation, the Shodor Education Foundation continues to provide a wide set of resources designed to assist educators with the formidable task of teaching young people about math and science. Since 1994, they have been responsible for the Interactivate website, which is designed to create, collect, and disseminate Java-based courseware for exploration in science and mathematics. On this part of the website, visitors can consider some of the 90 items they have created so far. The subjects covered include geometry, algebra, probability, and discrete functions. Within each activity, visitors can read more about the intended audience for each one, and also learn about the prerequisites and objectives for each lesson.