Snakes and Ladders on one side of the boad, Noughts and Crosses on the other. Works well laminated back-to-back, with OHP pens — wipe clean! Students ask each other questions, which they must get right before moving their counter on. Sample questions (KS3 Science) for the students to ask each other also given here. You can create more that are right for your class’ level or they can compose some themselves.