"Who goes first" possibility PPT download

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"Who goes first" possibility PPT download

Part One: Introduction of New Course

In life, we often use games such as "coin toss" and "hammer-paper-scissors" to determine who starts first. Do students know why this is?

Because it's fair to do so.

Why do you say this is fair?

In life, only fair things satisfy everyone. Today we will explore why this game is fair.

Who will take the PPT first? Part 2: Explore new knowledge

Xiao Ming and Xiao Hua are going to play chess. They are very humble when deciding who goes first. For the sake of fairness, can you think of a way for them to decide who goes first?

The clever Naughty and Xiaoxiao came up with a solution for them respectively. Let's take a look at Naughty's solution. He said, "You can toss a coin. If it lands on heads, Xiao Ming goes first, and if it lands on tails, Xiao Hua goes first." Do you think this is fair? ?

Some students said it was fair and some said it was unfair.

Now that everyone has their own opinions, let's test whether the naughty approach is fair.

1. Collaborate in groups.

2. Each team member tosses a coin several times (20 times in total) and records the results.

3. Is it fair to discuss a coin toss?

What did you find from the data you compiled?

Although the number of occurrences of the front and back is not exactly equal, the error between the two data is very small. So the coin toss is still fair. The key to judging whether a game is fair is to look at their possibilities. If the possibility is high, the chance of winning is high. If the possibility is small, the chance of winning is small. Only when the possibilities are equal and the chance of winning or losing is the same, the game is fair.

Scientists have to conduct hundreds or thousands of experiments each time to test the accuracy of the truth. Not only scientists, but also the teachers in today's class feel that you also have the exploratory spirit of scientists.

Now can you judge whether Xiaoxiao's method is fair? This is what she said: "If the dice is rolled, if the number is greater than 3, Xiao Ming will go first, if the number is less than 3, Xiao Hua will go first."

Who will take the PPT first? Part 3: Classroom exercises

1. (1) Roulette A is designed by Xiaoxiao. Please determine the rules to make the game fair for the other party.

(2) Roulette B is designed to be naughty. Please determine the rules to make the game fair for the other party.

(3) Please also design a turntable and determine a fair game rule for the other party.

2. Qisi and Miao want to play a ball-touching game. They touch a ball at random each time, then put it back and shake it well. Each person touches the ball 10 times. If you touch the white ball, Wonderful Thinking will get 1 point, if you touch the yellow ball, Wonderful Thinking will get 1 point, and if you touch the balls of other colors, neither player will score. Which pockets do you think are fair to pick the ball from?

It's fair to touch the ball from the first pocket,

Because there are the same number of white balls and yellow balls.

Answer: It is fair to touch the ball from the first pocket.

Who will take the PPT first? Part 4: Class Summary

What did we learn in this lesson? What did you gain?

Equal probabilities, fair game

Possibilities are not equal, the game is unfair

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For more information about the "Possibility of Who Goes First" PPT courseware, please click on the "Possibility of Who Goes First" PPT tab.

"Who Goes First" Possibility PPT Courseware (Lesson 2):

"Who Goes First" Possibility PPT Courseware (Lesson 2) Part One Content: Classroom Introduction 1. Based on life experience and experimental data, game rules that are fair to both parties can be designed. 2. Through game activities, you can experience the possibility of events happening and the fairness of game rules..

"Who Goes First" Possibility PPT Courseware (Lesson 1):

"Who Goes First" Possibility PPT Courseware (Lesson 1) Part One: Class Introduction 1. Through game activities, understand the possibility of events happening. 2. Be able to analyze and judge the fairness of game rules, and design simple and fair game rules. 3. In the design company...

"Who goes first" possibility PPT (Lesson 2):

"Who Goes First" Possibility PPT (Lesson 2) Part One Content: Knowledge Explanation Throw the bottle cap. Give it a try, play the game 20 times with your deskmate, and record the game results to verify whether your judgment is correct? Why is it that the number of times when the cover is facing down is obviously more than when the cover is facing up..

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Update Time: 2024-09-23

This template belongs to Mathematics courseware Beijing Normal University Edition Fifth Grade Mathematics Volume 1 industry PPT template

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