Discuss the outcome with your partner. Are the results what you expected this time? Is there a way of knowing for certain what the outcome of 10 coin tosses will be? Do you think that any outcome is more likely than another outcome?


Think About the Chances – Coloured Counters in a Bag


There are 9 counters in a bag: 6 are red and 3 are blue. If you take out one counter without looking into the bag, can you tell for certain what colour counter will be drawn fi rst?


Are you more likely to take out a red counter or a blue counter?


Can you name a colour of counter that would be impossible to take out fi rst?


If you take out and replace one counter at a time, and do this 18 times, how many of each colour counters do you think will come out in total? Try this experiment with your partner and record your results below.


1. How many do I predict? How many 12 345678910 11 12 do I predict? 13 14 15 16 17 18


Total


=


Discuss the outcome with your partner. What have you learned about chance?


Total


=


Which of these board games is based more on chance than on skill:


Trivial Pursuit, Snakes and Ladders, Cluedo? Why?


32 Chance


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