"Average" Average and bar chart PPT download

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"Average" Average and bar chart PPT download

Part One: Learning Objectives

1. Look at the specific situation, experience the process of finding the average using the method of "moving more to make up for the less", and understand the meaning of the average.

2. Be able to calculate simple averages, use averages to compare the overall situation of two sets of data, and develop preliminary data analysis concepts.

3. Strengthen the close connection between mathematics and life, and realize the important value of mathematics in life.

Average PPT, part 2: introduction of new lessons

Everyone’s methods are great! Today we are going to meet a new friend - the average.

You can pour water from the cup with more water into the cup with less water until the two cups have the same amount of water...

You can also pour two cups of water into a container, and then pour the same amount of water into both cups.

Average PPT, Part 3: Interpretation of Examples

How many did your team collect per person on average?

Students from the environmental protection team collected a lot of used beverage bottles over the weekend.

By moving more to make up for the less, it can be seen that each person collected an average of 13.

To solve this problem, we first need to know how many beverage bottles each person collected.

It can also be calculated as follows.

13 is the average of the four numbers 14, 12, 11 and 15.

(14＋12＋11+15)÷4

=52÷4

=13(pieces)

Answer: The environmental protection team collected an average of 13 used beverage bottles per person.

Average PPT, Part 4: Summary

How to find the average

"Move more to make up for less" method: Move the person who collected more mineral water bottles to the person who collected less mineral water bottles.

Formula method: First find out how many mineral water bottles 4 people have collected in total, and then divide by the total number of copies to find out how many bottles each one is.

The average can reflect the overall situation of a set of data.

Average PPT, Part 5: Quiz in class

1. Below is the situation of five students donating books to children in disaster areas.

How many books did each person donate on average?

(8+6+9+8+14)÷5

=45÷5

=9(this)

Answer: On average, each person donated 9 copies.

2. The following table shows the height and weight of 6 students in a certain group.

Please calculate the average height and average weight of these students.

(139＋140＋135＋138＋139+137)÷6

=828÷6

=138(cm)

Measure the height and weight of the students in this class and calculate the average height and weight of the entire class.

3. Is the following statement correct? Mark “√” for correct answers and “×” for wrong answers.

(1) Wang Yue’s total score in the five long jumps is 10m. Her long jump score must be 2m each time. ( )

(2) The average height of the school volleyball team members is 160cm, some players are over 160cm tall, and some are less than 160cm tall. ( )

(3) The average weight of the classmates in Xiaodong's group is 36kg, and the average weight of the classmates in Xiaogang's group is 34kg. Xiaodong must be heavier than Xiaogang. ( )

Average PPT, Part 6: Homework

1. Choose from the after-school exercises.

Keywords: Free download of PPT courseware for mathematics in the second volume of the fourth grade of the People's Education Press, download of average PPT, download of average and bar chart PPT, .PPT format;

For more information about the "Average Average and Bar Chart" PPT courseware, please click the Average PPT Average and Bar Chart PPT tab.

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Update Time: 2024-10-04

This template belongs to Mathematics courseware People's Education Press Fourth Grade Mathematics Volume 2 industry PPT template

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