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7.1 transparency 2

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7.1 transparency 2

  1. 1. Now we come to a cool subject. This helps us understand all sorts of things. We’ll learn more about this in Maths too. It’s all about understanding that different things have different chances of happening – that is, we need a good idea of how likely they are to happen. Yes kids, Joe is right, we are going to talk about Risk behaviour and probability. (Probability is just a fancy word for ‘chance’.) We’ve covered risk-taking behaviour and you probably have a good idea of what probability means, but we’re going to see if we can tie them together… Grade 7 | Unit 7.1 | Page 13 Unit 7.1 Transparency 2 - page i
  2. 2. Let’s go through some scenarios to see if we can get to grips with probability… • What is the probability of being struck by lighting when you are inside your home? 100% certain? 50% likely? 0%, i.e. certain that it won’t happen? • What is the probability of being struck by lightning when outside in the open veld during a thunder storm? Is it higher or lower than being inside your home? Grade 7 | Unit 7.1 | Page 14 Transparency 2 - page ii
  3. 3. Here are some trickier questions.…(and very relevant ones) • What is the probability of a young person developing an alcohol addiction after drinking a strong brandy? • What is the probability of an older person in his 60s developing an addiction to alcohol after drinking a strong brandy? • What is the probability of a young person developing an addiction to alcohol after getting drunk most weekends? There are different probabilities depending on: • your choice • your personality • the circumstances and • sometimes sheer luck! Grade 7 | Unit 7.1 | Page 15 Transparency 2 - page iii

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