When I used to teach AP Computer Science, I'd have my students make paper airplanes on the first day. I'd have them write down the instructions to make their a

When I used to teach AP Computer Science, I'd have my students make paper airplanes on the first day. I'd have them write down the instructions to make their airplanes. Then I'd follow their instructions in the strictest, most literal sense possible, resulting in some lopsided airplanes. It was a great beginning lesson in algorithms.