1. Probability
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2. Today we will be learning to:
know that probability is measured on a scale of 0 - 1
place events on a 0 – 1 scale
estimate probability
use the notation for probability.

3. Mental Activity
equivalent fractions

4. Make a list all the vocabulary you know relating to fractions.

5. 4 7 Equivalent fractions Say a fraction equivalent to this.
Explain the strategy you used.

6. Make an equivalent fraction for each of the following.
Equivalent fractions
Make an equivalent fraction for each of the following.
Record your answers.

7. Equivalent fractions 1 2

8. Equivalent fractions 2 3

9. Equivalent fractions 6 7

10. Equivalent fractions 9 10

11. Equivalent fractions 3 5

12. Equivalent fractions 3 4

13. Equivalent fractions 5 6

14. Equivalent fractions 3 8

15. Equivalent fractions 5 9

16. Today we will learn how to measure probability on a 0 – 1 scale.
Main Activity
Today we will learn how to measure probability on a 0 – 1 scale.

17. 0 means that something will definitely not happen.1
0 means that something will definitely not happen.
What could 1 mean?

18. 1 0 means that something will definitely not happen.1
0 means that something will definitely not happen.
1 means that something definitely will happen.
How can a fifty-fifty or even chance fit into this theory?

19. The Probability Scale 1
Where should ½ go?

20. What is the probability of getting a ‘head’ when tossing a coin?
The Probability Scale 1
What is the probability of getting a ‘head’ when tossing a coin?

21. What is the probability of rolling an eight with a single fair dice?
The Probability Scale 1
What is the probability of rolling an eight with a single fair dice?

22. What is the probability of the sun rising in the morning?
The Probability Scale 1
What is the probability of the sun rising in the morning?

23. What is the probability of getting a six when throwing a dice?
The Probability Scale 1
What is the probability of getting a six when throwing a dice?

24. The Probability Scale 1 ½ There are six possibilities.1
There are six possibilities.
The number 6 is only one possibility.
Therefore there is a 1/6 chance.

25. Excuse me, how do I place 1/6 on the probability scale?
You use the same technique you would use with a fraction number line.

26. Placing 1/6 on a probability scale.
Draw a simple probability scale. 1

27. Placing 1/6 on a probability scale.
Divide the probability scale into six equal parts. 1

28. Placing 1/6 on a probability scale.
Divide the probability scale into six equal parts. 1
1/6
Each division is one sixth.

29. What is the probability of getting a six when throwing a dice?
The Probability Scale 1
What is the probability of getting a six when throwing a dice?

30. What is the probability of getting a six when throwing a dice?
The Probability Scale 1
1/6
What is the probability of getting a six when throwing a dice?

31. What is the probability of picking out a ‘p’ from the letters above?
HIPPOPOTAMUS 1
What is the probability of picking out a ‘p’ from the letters above?

32. There are three chances out of twelve letters which is 3/12.
HIPPOPOTAMUS 1
There are three chances out of twelve letters which is 3/12.
3/12 is equivalent to ¼.

33. There are three chances out of twelve letters which is 3/12.
HIPPOPOTAMUS 1
There are three chances out of twelve letters which is 3/12.
3/12 is equivalent to ¼.

34. Group Work A ‘Will it or won’t it?’ activity
A ‘Might do, might not!’ activity

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