Here are two games you can play. If you played both games the same number of times, in which game would you expect to win more points?
Game 1:
In every round you flip four coins and win 3 points if you get two heads and two tails
or
Game 2:
In every round you spin three 1 - 6 spinners and win 2 points for every six that appears
The interactivity below allows you to simulate both games (including versions in which it 'costs' a point to play each round).
Can you explain the result of playing each game a large number of times?