This is a very rich resource of interactive activities that can be used on an Interactive Whiteboard. 288 activities ready to go!
Topics covered include:
Number and Operations, Geometry, Algebra, Probability, Statistics, Modeling, Discrete, Trigonometry, and Calculus
Age range: Grades 3-5, Grades 6-8 , Grades 9-12 and Undergraduate
These resources can be sorted by Subject Content or Audience.
Shodor have also developed apps for iPad