The best results, in terms of positive kid, parent and teacher feedback, arise from choosing something that you enjoy doing that almost nobody else in the group has ever done. Your enthusiasm is more valuable than anything. Build a list of things you enjoy doing, and assess each one for how easy it would be to transfer the skill. There's a connection with delivery tactics. People learn when they are made briefly uncomfortable. Kids of that age are most easily swayed by each other; so whatever you choose to do must be interesting for a majority of them. Assess each idea against how likely it is for the kids to be interested. It depends on the kids. Then when delivering the content, engage the interested with the uninterested. Should comedic delivery be your thing; surprise them with the truth, every 15 seconds. That is, you set them up with their own expectations, then knock them down, at a rate of about 0.0666 Hz. Things I've done with kids; - making a torch; 5mm white LED with twin AA cells and push button, - night light; 5mm red LED with twin AA cells, always on or dark activated, using "flat" cells taken from other appliances; an opportunity to explain the discharge curve, - arduino blink sketch; a tool that can act faster than they can, --=20 James Cameron http://quozl.netrek.org/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .