The students stand in a circle and each think of a question related to an academic concept which has recently been covered. One of the students starts by asking the question to the student on their left, who answers and then sends the question on until everyone in the circle has given their answer to the question. Then the student next to the student who started sends their question around. The activity continues until everyone has asked a question. At the end the students give the correct answers to their questions.
It can be a good idea to send several questions around the circle so you do not have to wait so long for everyone to answer.