Each player counts his or her cards to determine the winner. All matches must be as described on the answer sheet. Teacher can decide whether or not to continue the game by the amount of interest shown by the students. A written test to determine knowledge gained. Number of students playing should not exceed four.
Students can pair up to play and one student can play also.
A referee can be chosen to settle disputes by checking the answer sheet. When students feel they have mastered the first set, they go on to the second set. The following answer sheet should be used to make the Concentration cards. The cards can be made on 3 x 5 index cards, putting two facts to a card and cutting them in half.