Idea 21of 22Builds onIs the game fair?
Make an unfair game fair
How do you change a spinner to make a game fair?
Today you'll discover
- how unfair the game is
- which section to change
- how to check the fix
Think firstThree orange sections for Ana, one blue for Ben
Ana scores on orange, Ben on blue. How could you make this game fair?
Decide first, then press Next. Make each player's share of the spinner the same.
A spinner of three orange sections and one blue, with Ana scoring on orange and Ben on blue: Ana 3/4, Ben 1/4. One orange section is outlined with a dashed line to recolour it blue. Then the fixed spinner, two orange and two blue: Ana 2/4, Ben 2/4, fair. The last step shows a spinner of four orange and two blue sections.
See the whole ideathe big idea and the key word, in one place
The big idea
To make an unfair game fair, change the spinner until every player has the same share.
The fix
One section moves from Ana to Ben.
- before3/4 and 1/4
- recolour oneorange → blue
- after2/4 and 2/4
Easy to get wrongTaking turns or going first does not fix it. Only changing the spinner changes the chances.
Key word
- unfair game
- a game where some players have a better chance of winning than others
Ready to use it?
- Change a spinner so a game becomes fair.