This software download half_life_102 is an MSI in a ZIP file. So just unzip for windows any version (inc Windows 7). It then installs locally and gives you a full suite of animations and games to play about half life of isotopes for GCSE level and a focus on the use of tracers. It includes full help file and PPT which you can edit to match the animations.
This animation also featured in the TES Newspaper Jan 2011. Also Won a Prize as the TES best teacher animation for August 2011!
