Check that students have assimilated the contents of a topic by means of a review. It is therefore useful in the middle or at the end of a lesson.


Part of a lesson (~20 minutes).


  • Step 1: the teacher prepares about 20 answer sheets (or as many as necessary) with one answer on each sheet (not too long, e.g. concepts, years, names of scientists, etc.).
  • Step 2: the sheets are stuck on the blackboard in front of the class.
  • Step 3: the class is divided into two teams A and B.
  • Step 4: In each team a representative is appointed to answer the question asked and they stand in front of the answers.
  • Step 5: By drawing lots it is decided which team starts by asking a question, the answer to which is on the board.
  • Step 6: Once the question has been asked, the representatives of each team have to try to find the answer by touching the correct answer on the board with their hand.
  • Step 7: whoever does it the fastest stays on the board. The other is replaced by the next pupil in his or her group. And the answered sheet is removed from the board.
  • Step 8: now it is the other team that asks the question. And so on until questions have been asked for all the answers raised.
  • Step 9: a record is kept of the correct questions answered by each group to determine the winner.


  • To review each of the code blocks of the Scratch application, they put them on the blackboard and have to ask the appropriate questions about what they are executing.
  • To review the key dates of a historical event, e.g. the World Wars.
  • To review the main scientists and their discoveries.