"Guessing Game" Understanding Equations PPT Download

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"Guessing Game" Understanding Equations PPT Download

Part One: Learning Objectives

Through the guessing game, you will be able to use the properties of equations to solve equations of the form "ax±b=c (a≠0)".

Be able to use equations to solve simple practical problems and further understand the thinking methods of equations.

Enhance the application awareness of mathematics in solving problems and stimulate interest in learning.

Number guessing game PPT, part 2: review

1. Calculate the values ​​of the following unknowns orally.

x-19=2　16+x=30

3x=27x÷7=8

2. Equations can be solved according to the properties of equations. Please tell us about the properties of equations.

(1) If the same number is added (or subtracted) to both sides of the equation, the equation still holds. The equation still holds.

(2) If both sides of the equation are multiplied by the same number (or divided by the same number that is not 0), the equation still holds.

Number guessing game PPT, the third part: interpretation of examples

Can you understand this game? How did the wise old man guess the answer?

Try to solve this problem by making an equation.

Solution: Let this number be .

Play a guessing game with a partner, list equations and solve them.

Number in mind × 3-20 = 100

Solution: Let this number be x.

Number guessing game PPT, part 4: summary

Use the properties of equations to solve equations of the form ax±b=c

To solve an equation of the form ax±b=c, first subtract (or add) b on both sides of the equation according to property 1 of the equation, and then divide by a on both sides of the equation according to property 2 of the equation, so that the left side of the equation only The unknown number x is left, so the value of x can be found.

General steps for solving practical problems using equations

(1) Understand the meaning of the question, find out the known quantities and unknown quantities and the quantitative relationship between them, and write the equivalence relationship; (2) Set up the unknown number x; (3) List the equations based on the equivalence relationship; ( 4) Use the properties of the equation to solve the equation; (5) Check the solution of the equation and write the answer.

Number guessing game PPT, part 5: quiz in class

1. Solve the equation.

2. Look at the picture and talk about the equivalent relationship, and then make equations to solve the problem.

4. Make equations and solve them.

Number guessing game PPT, Part 6: Homework

1. Select from the after-class exercises;

2. Complete the exercises in this lesson in the exercise book.

Keywords: Free download of Beijing Normal University edition fourth-grade mathematics PPT courseware volume 2, number-guessing game PPT download, understanding of equations PPT download, .PPT format;

For more information about the "Understanding Equations Guessing Game" PPT courseware, please click the "Understanding Equations PPT Guessing Game PPT" tab.

"Guessing Game" Understanding Equations PPT:

"Guessing Game" Understanding Equations PPT Part One: Learning Objectives 1. Through activities such as guessing games, learn to use equations to solve simple application problems. 2. Further understand the meaning of equations by solving problems. [Key Points] Further understand the meaning of the equation,...

"Guessing Game" Addition and Subtraction PPT download:

"Guessing Game" Addition and Subtraction PPT Download Part One Content: Classroom Introduction 1. In the activities of the guessing game, further understand the meaning of addition and subtraction, explore and master the addition of 6, and the minuend of 6 Subtraction calculation method. 2. Be able to list additions based on mathematical information..

"Guessing Game" Addition and Subtraction PPT:

"Guessing Game" Addition and Subtraction PPT Part One Content: Learning Objectives 1. In the activity of Guessing Game, further understand the meaning of addition and subtraction, explore and master the calculation method of addition and subtraction to get the number 6. 2. The number that can be calculated correctly is 6 additions and the corresponding subtractions. 3..

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Update Time: 2024-07-06

This template belongs to Mathematics courseware Beijing Normal University Edition Fourth Grade Mathematics Volume 2 industry PPT template

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