Not my idea - I got it from Elaine, who got it from someone else, so apologies to them! Make a grid with enough squares in for each member of your class, or do what we do and make enough for 1/2, then double up. In each square, a question at the top and the answer underneath. Chop them up and hand them out to everyone. Everyone must go round the class, asking people the question on their card. Then the other person asks their question. When both people have asked the question, swap cards and find someone else and repeat the process. Works really well. I also keep a copy of this NOT chopped up and make enough for pupils to do a quick teach and test pairwork.