"Sector Chart" data collection and organization PPT courseware 3

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"Sector Chart" data collection and organization PPT courseware 3

Fan chart (key points)

A circle is used to represent the whole, and each ________ in the circle represents different parts of the whole. Such a statistical chart is called a sector chart. The size of the sector reflects the size of ________ as a percentage of the total.

Practice in class

1. Zhang Ying used the statistical chart in Figure 1 to represent her weekly expenditure. It can be seen from the figure that ( )

A. Total amount spent during the week

B． Amount of various expenses for a week

C． The amount of each expenditure in a week as a percentage of the total expenditure

D． Changes in the amount of each expenditure during the week

2. The total number of third-grade students in a certain school’s junior high school is 1,000. The proportion of third-grade students is shown in Figure 2. Then the number of seventh-grade students is ________.

The fan chart has three functions:

(1) Reflect the size relationships and gaps between various parts;

(2) When the specific quantity of the whole is known, the specific quantity of each part can be found with the help of a fan chart;

(3) When the specific quantity of a certain part is known, it can also be used to find the specific quantity of the whole.

If the books donated by this class are distributed to the mountain school, the brother school in this city and other classes in the school according to the proportion shown in Figure 5, then the number of books donated to the mountain school will be more than the books given to the brother school in this city.

Solution: (1)17+22+4+2=45 (name).

(2)5×17＋10×22+15×4+20×2=405 (volume).

(3)405×60%-405×20%=162 (volumes).

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For more information about the PPT courseware "Data Collection and Organizing Sector Chart", please click the Data Collection and Organizing PPT Sector Chart PPT tab.

"Sector Chart" data processing PPT teaching courseware:

"Sector Chart" Data Processing PPT Teaching Courseware Part One Content: Objectives of this Section 1. Through examples, learn about fan charts and understand the characteristics and functions of fan charts. 2. Be able to read fan charts, obtain effective information from them, and experience the application of statistics in real life..

"Sector Chart" data processing PPT download:

"Sector Chart" Data Processing PPT Download Part One: Classroom Introduction 1. Understand the characteristics of the sector chart and understand the role of the sector chart; 2. Learn to observe fan charts and be able to raise and solve mathematical problems based on fan charts; 3. exist..

"Sector Chart" data processing PPT:

"Sector Chart" Data Processing PPT Part One Content: Learning Objectives 1. Through mathematical practice activities, students can learn about fan charts, experience the characteristics of fan charts, and understand the role of fan charts. 2. Learn to observe fan charts and learn from fan...

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Update Time: 2024-10-31

This template belongs to Mathematics courseware Beijing Normal University Edition Seventh Grade Mathematics Volume 1 industry PPT template

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