Students had great fun using a new activity in our makerspace rotation selection: the augmented reality app, Ballstrike, free and available from the store on Windows 8 tablets. Apparently available on apple devices as well. We only used the free levels, but was very easy to use and students had heaps of fun, while also learning another application of augmented reality.
Good cheat sheet on Lego Wedo with Scratch and Makey Makey:
Good idea for challenges at: http://kidsengineer.com/?p=646
Below is instruction challenge sheet based on challenge above. Car in image far below was designed, built and completed, including with sensors, using Lego Wedo software they had not used before, so car stopped when anything in front of it, by 1 group (13 years old), but other 4 groups did not complete in 45 mins, so need more time or easier challenge: