A series of flash lessons/tutorials you can run over a 6 week course. The images for the Ken Burns lesson are all CC licensed but you could easily change the topic if you wanted to - providing a set of images to work from is a HUGE timesaver and avoids spending the first 30 minutes browsing
Series of videos to show students how to make a game in scratch. Learn how to make parrots move randomly, create a crosshair target to follow your mouse, show and hide objects, keep scores and play against a timer.
"After lots of requests it's finally here - a collection of 10 activities to help introduce children to entering formulae into spreadsheets. Starts at the basics of cell referencing and using simple formulae, moving onto more complex formulae (e.g. SUM, MIN, MAX, AVERAGE) and ending with some mode"