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 the Distance travelled . Flip the three coins and do a look up in the Time travelled . Determine the speed . 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] 
 Rates 


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


 Distance travelled 50 km 75 km 100 km 125 km 150 km 300 km 600  km 1000 km


 Time travelled 0.1 hours 0.25 hours 0.5 hours 1 hour 1.5 hours 3 hours 5 hours 10 hours

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

 vals[0] 
 Rates 


 Rates 50 km 75 km 100 km 125 km 150 km 300 km 600  km 1000 km


 0.1 hours 500 km per hour 750 km per hour 1000 km per hour 1250 km per hour 1500 km per hour 3000 km per hour 6000 km per hour 10000 km per hour


 0.25 hours 200 km per hour 300 km per hour 400 km per hour 500 km per hour 600 km per hour 1200 km per hour 2400 km per hour 4000 km per hour


 0.5 hours 100 km per hour 150 km per hour 200 km per hour 250 km per hour 300 km per hour 600 km per hour 1200 km per hour 2000 km per hour


 1 hour 50 km per hour 75 km per hour 100 km per hour 125 km per hour 150 km per hour 300 km per hour 600 km per hour 1000 km per hour


 1.5 hours 33.33 km per hour 50 km per hour 66.67 km per hour 83.33 km per hour 100 km per hour 200 km per hour 400 km per hour 666.67 km per hour


 3 hours 16.67 km per hour 25 km per hour 33.33 km per hour 41.67 km per hour 50 km per hour 100 km per hour 200 km per hour 333.33 km per hour


 5 hours 10 km per hour 15 km per hour 20 km per hour 25 km per hour 30 km per hour 60 km per hour 120 km per hour 200 km per hour


 10 hours 5 km per hour 7.5 km per hour 10 km per hour 12.5 km per hour 15 km per hour 30 km per hour 60 km per hour 100 km per hour