The McGraw Hill 6th grade book series of games.
Instructions:
Find three coins of different sizes (e.g. quarter, nickle, penny). Flip each and record the head/tail value. Look up and measure the area from Door A . Flip the three coins and do a look up in and measure the corresponding height in Door B . Multiply them together to get the volume . Your opponent may challenge you. Look up the answer in the table on the next page. If you are right and your opponent didn't challenge you, you get a point. If you are right and your opponent did challenge you, you get two points. If you are wrong and your opponent challenged you, your opponent gets a point. If you are wrong and your opponent didn't challenge you, nobody gets a point. Your opponent plays next. 
 vals[0] 
 Volume 


 Coin tosses (largest to smallest):  TTT TTH THT THH HTT HTH HHT HHH


 Area in Door A (cm squared) 3.1 square cm 3.3 square cm 3.9 square cm 4.6 square cm 1.4 square cm 2.3 square cm 4.3 square cm 3.5 square cm


 Height (cm) in Door B 1.4 cm 2.3 cm 3.1 cm 3.3 cm 3.5 cm 3.9 cm 4.3 cm 4.6 cm

 
  On a different page so the players have to turn to it...  
 

 vals[0] 
 Volume 


 * 3.1 square cm 3.3 square cm 3.9 square cm 4.6 square cm 1.4 square cm 2.3 square cm 4.3 square cm 3.5 square cm


 1.4 cm 4.34 cubic cm 4.62 cubic cm 5.46 cubic cm 6.44 cubic cm 1.96 cubic cm 3.22 cubic cm 6.02 cubic cm 4.9 cubic cm


 2.3 cm 7.13 cubic cm 7.59 cubic cm 8.97 cubic cm 10.58 cubic cm 3.22 cubic cm 5.29 cubic cm 9.89 cubic cm 8.05 cubic cm


 3.1 cm 9.61 cubic cm 10.23 cubic cm 12.09 cubic cm 14.26 cubic cm 4.34 cubic cm 7.13 cubic cm 13.33 cubic cm 10.85 cubic cm


 3.3 cm 10.23 cubic cm 10.89 cubic cm 12.87 cubic cm 15.18 cubic cm 4.62 cubic cm 7.59 cubic cm 14.19 cubic cm 11.55 cubic cm


 3.5 cm 10.85 cubic cm 11.55 cubic cm 13.65 cubic cm 16.1 cubic cm 4.9 cubic cm 8.05 cubic cm 15.05 cubic cm 12.25 cubic cm


 3.9 cm 12.09 cubic cm 12.87 cubic cm 15.21 cubic cm 17.94 cubic cm 5.46 cubic cm 8.97 cubic cm 16.77 cubic cm 13.65 cubic cm


 4.3 cm 13.33 cubic cm 14.19 cubic cm 16.77 cubic cm 19.78 cubic cm 6.02 cubic cm 9.89 cubic cm 18.49 cubic cm 15.05 cubic cm


 4.6 cm 14.26 cubic cm 15.18 cubic cm 17.94 cubic cm 21.16 cubic cm 6.44 cubic cm 10.58 cubic cm 19.78 cubic cm 16.1 cubic cm