ExploreLearning offers a catalog of modular, interactive simulations in math and science for teachers and students in grades 3-12. They call these simulations Gizmos.
Gizmos are fun, easy to use, and flexible enough to support many different teaching sty
Developed to help students improve their math skills interactively. A game room for playing games like Matho and Hidden Picture or test math skills with Flashcards.
The goals of this site are the creation, collection, evaluation, and dissemination of java-based courseware for middle school mathematics explorations.
There are lots of full-length videos that can be streamed from this site for free. Just create a log in, and stream them to be viewed on your ActivBoard.
Over 100 interesting math puzzles to help students learn to enjoy puzzles & the mathematics behind them. Categorized by type, & within each category are listed in order of increasing difficulty.