Rock Paper Scissors provides the theme for this lesson on game playing, game designing and strategies. The lesson really brings this (hitherto) simple game to life and pushes it to the very limit. Children (and adults) love it! Driven by a PowerPoint full of illustrations and animations, and even links to videos (!), this lesson introduces children to the game, and then challenges them to play it as a class game in a very unusual and stimulating way. Even as an adult, I find this a real mental challenge, but great fun. Following on from this, there is analysis of the game, and opportunities to extend the game, devising rules and tables of outcomes. Let me know if you have any questions or suggestions, and a BIG BIG thanks for looking (as a full time practicing teacher, I KNOW how time consuming this process can be). ALL my postings are FULLY "classroom-tested" - before I publish on TpT, my lessons are tested by both myself and colleagues, rigorously evaluated and discussed, and continually updated to maximize their effectiveness - but there is always the possibility of error and room for improvement, so do please provide constructive feedback. Search words: games, paper, rock, scissors, lizard, Spock, challenge, brain, fun, mental, class, strategies