From the Open University's Open Learn site.
Identify rotation and translation symmetries in wallpaper patterns. Think this will work well in class, but uses click & drag, so will probably use a wireless mouse rather than the IWB.
Elementary interactive website for students to use on IWB or computer to learn about fractions. Fractions are available by recognizing/comparing & decimals/percents.
This tool enables K-6 students to build visual models of word problems. There are hundreds of built-in math problems covering thirty-six different categories. Videos explain how to model each problem type. The full screen feature makes this application compatible with interactive white boards.
"Here you will find five different graphs and charts for you to consider. Not sure about which graph to use? Confused between bar graphs and pie charts? Read our:
Create A Graph Tutorial."
"The National Academy of Engineering (NAE), at the request of the National Science Foundation, convened a committee of leading technical thinkers to create a list of the grand challenges and opportunities for engineering facing those born at the dawn of this new century."