This is great. I just happened to be sitting next to a teacher when a presenter asked, “What does Angry Birds have to do with education?”. I whispered, “Physics”. The teacher replied, “We use physicsgames.net which is free and online”. Thanks! I’m sorry I can’t remember your name. Physicsgames.net  is a great resource and her favourite games for primary students was magic pen . Thanks for sharing! If it was you, email me at jvillis@inter-tech.com.au and I will acknowledge my source.