Cut the cards and write numbers 1-18 on the other side of the cards. Place them on the board so the ss can see the numbers. Divide the class into 2 teams and write the name of each team on the board. They take turns to choose a number and answer the questions. If their answer is correct, they'll get the score. If it is a volcano, the team will lose all the scores. The team with the higher score is the winner. This game is desiged based on units 4 and 5 of Top Notch 3A.