"Practical problems and linear equations of one variable" PPT of linear equations of one variable (ball game score table problem in lesson 3)

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"Practical problems and linear equations of one variable" PPT of linear equations of one variable (ball game score table problem in lesson 3)

Part One: Learning Objectives

1. Through the exploration of practical problems, realize the diversity of data information transmission forms in life.

2. Be able to read and understand tables, and extract key information from tables. (Key points, difficulties)

3. Master the general ideas for solving the "ball game score table problem" and be able to make judgments on actual problems based on the solution of the equation. (Key points and difficulties)

Situation introduction

Do you like watching basketball games? Do you know the points rules in basketball games?

Practical problems and linear equations of one variable PPT, part 2: competition points problem

Interactive exploration

The standings of a certain basketball league are as follows:

Question 1 What information can you learn from the table?

The number of wins for each team + the number of losses = the number of games played by this team;

The total points of each team’s wins + the total points of losses = the total points of this team;

The total points won by each team = points scored in 1 win × number of wins...

Question 2 Can you see from the table how many points you get for a negative game?

According to the score of the Steel Team, a loss equals 1 point.

Question 3 Can you further calculate how many points you get for winning a game?

Analysis: Assume that winning a game is worth x points. The equation can be solved based on any other row in the table. Here we take the first row as an example.

Practical problems and linear equations of one variable PPT, the third part: practice in class

1. A team participates in the competition and remains unbeaten in the first 9 games, accumulating 21 points. Competition rules: 3 points for a win, 1 point for a draw, then the team wins together ( )

A. 4 games B. 5 games C. 6 games D. 7 games

2. The points method for the Chinese Men’s Basketball Professional League (CBA) is: 2 points for a win and 1 point for a loss. A team has participated in 12 games and the total points are exactly 4 times the number of games won. Then The team won a total of ____ games.

3. There are 20 questions in a certain knowledge competition. Each correct answer is worth 8 points, and 3 points will be deducted for wrong answers or no answers. A contestant scored a total of 116 points in this competition. How many questions did he answer correctly?

Solution: Suppose x questions are answered correctly, then (20-x) questions are answered incorrectly or incorrectly

Answer, from the question: 8x-(20-x)×3=116.

Solve to get x=16.

Answer: He answered 16 questions correctly.

Practical problems and linear equations of one variable PPT, Part 4 content: Class summary

1. When solving problems related to tables, you must first find the relationship between quantities based on the relevant information given in the table, and then use mathematical knowledge to solve the problem.

2. When using equations to solve practical problems, attention should be paid to checking whether the solution of the equation is correct and consistent with the actual significance of the problem.

Keywords: free download of PPT courseware for mathematics in the first volume of the seventh grade of the People's Education Press, download of practical problems and linear equations of one variable PPT, download of PPT of linear equations of one variable, download of PPT of ball game points table problems, .PPT format;

For more information about the PPT courseware "Practical Problems of Linear Equations of One Variable and Questions of Ball Game Score Tables of Linear Equations of One Variable", please click on the PPT tag of Practical Questions of Linear Equations of One Variable and Questions of Ball Game Score Tables of Linear Equations of One Variable.

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Update Time: 2024-09-30

This template belongs to Mathematics courseware People's Education Press Seventh Grade Mathematics Volume 1 industry PPT template

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