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More Games
An Obstacle Race
You will need two dice, two coins and page R2.
Every year class IZ at Wombleside School invents a game of
chance. This year they have designed an obstacle race. To make it
more exciting, the obstacles come in pairs. Each competitor
chooses one from each pair.
Competitors are allowed to practise. This helps them choose their
route more skilfully. The obstacles must be tackled in the
correct order.
Figure 3 - The obstacle race
The first pair of obstacles is shown again in Figure 4.
Figure 4 - The first pair of obstacles
To get past an obstacle, you must follow the instructions in
the box.
If you choose 1a, you must throw two dice. When you get
a sum of 2 or 3, you can move on to the next obstacle.
If you choose lb, you must throw two dice. You can move
to the next obstacle when you throw a sum of 7.
Look at the class results of throwing two dice in Table 7 on page
R2.
| a |
How many times was the sum equal
to 2? |
| b |
How many times was the sum equal
to 3? |
| c |
How many times was the sum equal
to 2 or 3? |
| d |
How many times was the sum equal
to 7? |
| e |
Which obstacle would you choose
to begin the race? |
The complete obstacle course is shown in Figure 3.
Each competitor chooses one obstacle from each pair to make four
obstacles altogether.
| f |
Do some experiments to help you
to choose the easier obstacles. |
Select a partner, decide upon your routes, and then race to
see who wins. At each turn, follow the instructions in the box.
If you are successful, move on to the next obstacle, otherwise
try again on your next turn. Good Luck!
American Football
You will need a die and a counter.
Figure 5 represents a football pitch, with the ball in the
centre.
Figure 5 - Pitch for American football game
Throw a die. If the score is 5 or 6, A 'kicks' the
ball towards B, 5 or 6 spaces. If the score is
1, 2, 3 or 4, B
'kicks' the ball towards A, 1, 2, 3 or 4 spaces.
| a |
Play the game 10 times, using a
marker for the ball.
Make a note of the winner of each game. Give your results
to your teacher. |
Combine your results with the others from your class who
played this game.
| b |
How many times did A
win? |
| c |
How many times did B
win? |
| d |
Is it a fair game? Give reasons
for your answer. |
Coin Tennis
You will need two coins.
This game is based on tennis but uses coins. There are two
players, A and B. Each has a coin.
A serves by tossing a coin. If the outcome is heads H,
the service is good; if tails T, there is a fault.
Two services are allowed. H or TH give a good
service; TT gives a double fault, and B wins
the point.
If the service is good, B tosses a coin.
If the outcome is heads, it is a good stroke; if tails, the point
is lost.
This continues until the point is lost. Play a series of rallies,
scoring as in tennis.
| a |
Is it a fair game? If not, who
has an advantage? |
| b |
To make the game more realistic,
try different chance methods (e.g. dice or spinners) to
decide whether a serve or return is good. |
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