buckle

course content

Discount, example 4 on page 97 of the textbook.

Teaching objectives

1. Understand the meaning of discount and master the relationship between discount and percentage.

2. On the basis of mastering the problem of "what is the percentage of a number", solve the practical problems related to discounts independently.

3. Develop the study habit of independent thinking and careful examination of questions.

Teaching focus:

Understand the meaning of "discount" and know the relationship between numbers in discount application questions and "What is a number?"

Teaching difficulties

Independent analysis, find the correct analysis method.

training/teaching aid

multimedia courseware

teaching process

First, introduce the new curriculum and reveal the theme.

Every weekend, Spring Festival, festival or celebration, the store will hold promotional activities. Have you ever seen such a slogan around your life: "The fifth anniversary of the store celebration, 10% off for electrical appliances and 15% off for other goods"? So what do you mean by 15% discount and 10% discount? What does this mean? Do you want to know? In this lesson today, we will learn about discounts (blackboard writing topic).

Second, reveal the learning objectives

What is the learning goal of this class? Please read it.

Third, explore new knowledge.

(1) display self-study instruction 1

Self-study guide 1: Learn the first paragraph on page P97 of the self-study textbook and think about the following questions (compare who learns faster and better, and answer after 2 minutes).

What is a discount? What do you mean by discount?

② What does 50% discount mean? What do you mean by 25% discount?

Students self-study, feedback self-study situation

Exercise: Fill in the blanks.

(1) 60% off is 10 (), which is rewritten as a percentage ().

(2) A 60% discount is 10 (), which is rewritten as a percentage ().

(3) A 25% discount is 10 (), which is rewritten as a percentage (? )。

(4) 92% discount is 10 (), which is rewritten as a percentage (? )。

Now let's apply the knowledge of discount to solve the problems in life. Please follow the self-study guide 2 to learn example 4.

(2) Display self-study instruction 2

What is a 15% discount or a 10% discount?

(2) Example 4 (1), what do you mean by a 15% discount now?

How much is this car now? What is this?

④ Who is the unit "1" and how to solve it in one column?

What does (2) in Example 4 mean that only 10% of the money is spent now?

6. How to find out how much cheaper than the original price?

Please read carefully the content of Example 4 on page P97 of the textbook, and please complete the problem-solving process in the textbook.

After 6 minutes, we will communicate in the group first, and then the whole class will communicate with each other. )

Fourth, learn first. "

1, students read and think, teachers patrol and guide, and students learn by themselves.

2. According to the situation of self-study, students communicate in groups first, and then the whole class communicates.

Fifth, the post-education link

1. Students exchange opinions and discuss corrections.

2. Dial and expand.

According to Example 4 just now, let's think about what kind of discount problem we have learned before.

Teacher-student induction: Is it a question of what the number is?

Sixth, in-class training.