This document discusses probability and simple events. It begins with examples of rolling dice and finding the probabilities of various outcomes. It then defines key probability terms like sample space, complementary events, and the range of probabilities from 0 to 1. Several probability calculation examples are given for dice rolls, card draws, and spinners. The document emphasizes that the probability of an event is a number between 0 and 1, and discusses how to calculate probabilities and complementary events.

1. 9.1 Simple Events p370 Find the probability of a simple event

2. Turn and Talk What outcomes can be obtained when a die is rolled? What about when 2 dice are rolled? What sums can you get?

3. REMOVE ONE Dice Game Draw the following number line. 2 3 4 5 6 7 8 9 10 11 12

4. Place 15 chips on your number line Each number can have zero or multiple chips To win be the first to remove all your chips Chips are removed by rolling 2 die and getting their sum. (ex. Roll and 2 and 3 to get a sum of 5.) Then remove one chip that is covering that number. Write a prediction about what numbers are best to cover and why. Before you place your chips...

5. Let’s list all the possible outcomes This is called Sample Space .

6. Concept map

7. Ex. 1) What is the probability that we would roll a 2?

8. Ex. 2) What is the probability of rolling an even number on a number cube?

9. Ex. 3) In Parcheesi, you can move your game piece if you roll a total of 5 on two dice, or if a 5 is shown on at least one die. What is the probability that we can move our game piece?

10. The probability that something can happen is between 0 and 1. 0 1

11. Discuss with a partner the probability (as a percent) that these events will happen. Next time you attend math class you will discuss math. Next time your dog is hungry it will meow. It will rain tomorrow. Someone will solve the rubics cube this year. The library has at least one book.

12. Discuss What is the lowest probability possible? What is the highest? What is the range of probabilities possible? Give an example of a probability of 0. Give an example of a probability of 1.

13. Complementary Events Either it will rain tomorrow or it won’t. P (rain) + P (no rain) = 100% P (rolling a 2) + P (not rolling a 2) = ____

14. Ex 4) In Parcheesi, you can move your game piece if you roll a total of 5 on two dice, or if a 5 is shown on at least one die. Find the probability that Jewel cannot move her game piece on one roll of the die.

15. Ex 5) The probability that I will pick a boy is 3/8. What is the probability that I will not pick a boy?

16. There is a bad that contains 3 blue, 4 green, and 2 yellow marbles. What is the probability of pulling a yellow marble from the bag? What is the probability of pulling a blue marble from the bag? What is the probability of pulling a green marble from the bag? If you pull 2 marbles, what is the probability they will both be blue? (Hint: draw a diagram.)

17. Roll a 6-sided number cube. What is the probability of rolling a 2? What is the probability of rolling a 3? What is the probability of rolling an even number? What is the probability of rolling an odd number?

18. Spin the spinner to the right. What is the probability of spinning a 2? What is the probability of spinning a 3? What is the probability of spinning a 2 or 3? What is the probability of spinning a 5? What is the probability of spinning a 4 or less? 1 4 2 3

19. Journal How do you determine the probability of a specific event.

20. Homework P 372: 1-3, 10-28