"Linear Equation of One Variable" PPT Courseware 4

Description

"Linear Equation of One Variable" PPT Courseware 4

teaching objectives:

1. Understand the solutions of equations and the meaning of solving equations, and be able to judge whether a number is a solution to an equation.

2. Understand the meaning of linear equations of one variable and be able to identify linear equations of one variable

3. Cultivate students' thinking, discussion, communication abilities and cooperative spirit in inquiry activities.

Important and difficult points:

1. Definition of linear equation of one variable

2. Learn to judge linear equations of one variable

Experimental exploration

(1) The 1st time, the 2nd time, the 3rd time, the 4th time, the 5th time... how many pieces of paper were cut in total?

(2) If x times are cut (x is a positive integer), how many pieces of paper are cut in total? How did you get it? Communicate with classmates.

The first expression: 3x+1 The second expression: 4+3 (x-1)

(3) If a total of 64 pieces of paper are cut, how many times are they cut? How do you solve it?

3x+1=64 or

4+3(x-1)=64

Determine whether the equation is a linear equation of one variable:

①. Are both sides of the equal sign an integer?

②. Contains only one unknown number, and the highest degree of the unknown number is 1.

③. The coefficients of items containing unknown numbers cannot all be 0.

Both conditions are indispensable.

The value of the unknown that makes the left and right sides of the equation equal is called the solution of the equation

The solution to an equation with only one unknown is also called the root of the equation.

The process of finding the solution to an equation is called solving the equation.

fruitful

1. The concept of equations and linear equations of one variable

2. Solutions to equations and methods of testing whether the value of an unknown number is a solution to the equation

3. What is solving equations?

Compliance test

1. Which of the following equations is a linear equation of one variable ( )

A 2x-1=0 B 2x-y=3

C x2-16=0 D 4(x-1)=2(3y+1)

2. It is known that (m-1)x|m|-1=0, which is a linear equation of one variable about x,

Then m=___________.

3. Make an equation according to the meaning of the question:

A certain class of students donated a total of 131 yuan to the disaster area, which is 35 yuan more than the average of 2 yuan per student. Assume that there are x students in this class. According to the meaning of the question, form an equation _______.

Keywords: Teaching courseware for linear equations of one variable, Qingdao edition seventh grade mathematics volume PPT courseware download, seventh grade mathematics slide courseware download, linear equation of one variable PPT courseware download, .PPT format;

For more information about the PPT courseware "Linear Equations of One Variable", please click the "Linear Equations of One Variable" ppt tab.

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Update Time: 2024-10-04

This template belongs to Mathematics courseware Qingdao Edition Seventh Grade Mathematics Volume 1 industry PPT template

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