I have done a little teaching with younger age ranges, coding and math included. I had a lot of success with 'unplugged' computer science activities. Basicall

I have done a little teaching with younger age ranges, coding and math included. I had a lot of success with 'unplugged' computer science activities. Basically, any activity without computers. Let's learn what an algorithm is. Let's play with binary and make a 'secret code'. These activities are engaging and teach something worthwhile. It's very easy to get bogged down with tools, syntax and minutia when actually programming. For younger age ranges definitely try some computerless lessons. http://csunplugged.org/ http://csunplugged.org/