Page 99 - Math;Steps 3a: resource masters
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• Probability • • • • • • 30:26
Fair or unfair? An activity for 2 players
You need: dice with 4 blue faces and 2 red faces; paper and pencil each
OJ Decide together how many times each colour
will come up if the dice is thrown 60 times.
Why do you think that?
[!] Now throw the dice 60 times, keeping a record of
the colour thrown each time.
blue
red
How do your predictions and results compare?
00 Now play this game.
~ Read the rules first and decide what is likely to happen.
Who do you think will win? Why?
o The first player to throw blue goes first.
o First player Throw the dice. If you throw blue,
score one point. If you throw red, score no points.
o Second player Throw the dice. If you throw red,
score one point. If you throw blue, score no points.
o Take turns to play and keep a record of
your own scores.
o The first player to score 10 points wins.
Is this game fair or unfair? Why?
[I] If it is unfair, what changes can you make
so that it is fair?
[ID Design and tryout a game which is unfair.
Deciding whether a game is fair or unfair.
Name Materials: dice with 4 blue faces and 2 red faces;
paper and pencil for each player
Date
© 1993 Collins Educational (an imprint of HarperCollinsPublishers) STEPS 3a
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