"Care for Eyes" PPT courseware

Description

"Care for Eyes" PPT courseware

1. Situation introduction

The education department in a certain region conducted a 5-year follow-up survey on the vision of 100 students in urban and rural areas. The results are as follows.

What is the change in the number of myopia among urban and rural students?

What mathematical information do you know from the picture?

What questions can you ask based on this information?

2. Cooperation and exploration

What is the change in the number of myopia among urban and rural students?

discuss:

1. Which statistical chart is more appropriate to use to describe changes in data?

2. We have just learned about the compound bar chart. Think about it, what are its advantages?

3. Can you use compound line charts to describe and analyze data?

3. Independent practice

1. Look at the pictures, fill in the form, and answer the questions.

Which kind of washing powder has better sales? What suggestions do you have?

The sales of type A washing powder are better.

When purchasing, you can purchase more type A washing powder.

2. Look at the pictures and answer the questions.

(1) Let’s talk about the changing trend of the monthly average maximum temperature in the two cities in 2012.

The monthly average temperature shows an upward trend from January to July and August, and a downward trend from July and August to December.

(2) What is the difference in degrees Celsius between the monthly average maximum temperatures of the two cities in January? What about August? What did you find?

The temperature difference is large in winter and small in summer. 19 degrees Celsius 2.6 degrees Celsius

3. Look at the pictures and answer the questions.

(1) What is the difference in sales between the two types of clothes in July? What about October?

(2) What are the sales trends of the two types of clothes? What suggestions do you have?

The sales of sweaters are generally on an upward trend, while the sales of shirts are generally on a downward trend.

In the second half of the year, when the weather gets colder, buy more woolen sweaters; in the first half of the year, when the weather gets warmer, buy more shirts.

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Update Time: 2024-09-08

This template belongs to Mathematics courseware Qingdao Edition Fifth Grade Mathematics Volume 2 industry PPT template

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