Revison, C1, C3 and C4 for OCR 21st Century.\nThese are handouts to be printed out. Students work in pairs to complete them in a set amount of time. When the buzzer goes the handout moves on. (Bit like speed dating). Its pacy and you can adapt the time limit to your lesson length or ability of students. You could differentate by putting them in larger or smaller groups, and start them on different cards depending on ability. Hope its useful.