A beautifully designed and wonderfully useful number line resource for whiteboards. Choose the increments and starting point of the sequence and cover up numbers for the class to guess.
http://ictmagic.wikispaces.com/Maths
"A superb online whiteboard suite of tools, including a random name picker, classroom sound level indicator, display a QR code, drawing and text tools, traffic lights, timers, clocks and dates, and even a fab exit poll tool. You can even change the background, including your own images to display extra resource information, or use your computer camera to show live video like a visualiser."
A useful fraction tool for your whiteboard. Show virtual fraction tiles to your class to aim their understanding of the relative size of the fraction.
http://ictmagic.wikispaces.com/Maths
The Open University's Creative Archive gives you access to exclusive rushes from OU course programmes covering a wide range of areas including science, technology and the environment as well as society and culture.
'Ideas to Inspire'
is a collection of Google Docs presentations, which offer a large number of ideas for engaging lesson activities in a range of curriculum areas.