Students have a mini whiteboard (MWB), marker and sponge. For each statement, they must answer questions on their MWB. Questions are displayed on the board, students are given thinking time before writing down their answer. All the class show their answers on the count of 3. This allows for discussions on classic mistakes and common misconceptions. It also allows teachers to select mini whiteboards from pupils who approach problems in a different way. This is a very engaging task for students - it creates opportunities to address misconceptions and common mistakes seen in exams, and it encourages mathematical discussion.