Physics-online.com is a unique new online service that solves this by providing a searchable library of 1500 great interactive resources for teaching physics. A free lite version is available
This site aims to make high quality PowerPoint slideshows, presentations and other resources available for the teaching of physics, chemistry and biology. It also contains animations and other resources.
This is a great game and really makes you think! It would be wonderful for pairs of younger students to work on together or as a whiteboard, whole class activity.
Not posted to this group before but wondered if you'd be interested in a totally free video and interactive resource for 11-16s. Curriculum links included for UK.
This page contains free software offers. It's worth keeping an eye on it, as from time to time there will be special offers available.
Crocodile Elementary - now called Yenka Basic Circuits, is well worth a download.
Make a whole rainbow by mixing red, green, and blue light. Change the wavelength of a monochromatic beam or filter white light. View the light as a solid beam, or see the individual photons.