"Perimeter of a Circle" PPT courseware

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"Perimeter of a Circle" PPT courseware

The quotient of a circle's circumference divided by its diameter is a fixed number. We call it pi, represented by the letter π.

About 1,500 years ago, there was a great mathematician and astronomer Zu Chongzhi in China. He calculated that pi should be between 3.1415926 and 3.1415927, becoming the first person in the world to calculate the value of pi accurately to 7 decimal places. His great achievement was at least a thousand years earlier than when foreign mathematicians arrived at such precise values.

(1) Today I learned about the circumference of a circle. I know that pi is the ratio of ( ) and ( ). It is represented by the letter ( ). It was discovered by the ancient Chinese mathematician ( ).

(2) I also know that the circumference of a circle is always ( ) times its diameter. If you know the diameter of a circle, you can use the formula ( ) to find the circumference; if you know the radius of the circle, you can use the formula ( ) to find the circumference.

The radius of a car tire is 0.3 meters. How many meters does it travel in one revolution? How many meters will it travel if you roll 1000 times?

Xiao Ming’s mother built a flower bed under the wall of her house (pictured). Can you calculate the perimeter of the flower bed?

The picture below shows the track on the playground of Yucai Primary School. How many meters is the outer circle of the track? How many meters long is the inner circle? (Both ends are semicircles)

This courseware provides a comprehensive introduction to understanding circles through small games and exercises, which improves students' interest in learning and helps students better understand and remember the knowledge points of circles. It is a good classroom teaching courseware.

Keywords: circle courseware, understanding circles courseware, New People's Education Edition sixth grade mathematics PPT courseware, sixth grade mathematics slide courseware download, circle PPT courseware download, understanding circles PPT courseware download, .ppt format

For more information about the "Understanding the Circle" PPT courseware, please click the "Understanding the Circle ppt Circle ppt" tab.

"Use the circumference formula of a circle to solve practical problems" PPT courseware on the circumference and area of ​​a circle:

"Using the Circumference Formula of a Circle to Solve Practical Problems" Circumference and Area of ​​a Circle PPT Courseware Teaching Objectives 1. Combined with specific examples, experience the process of flexibly using the circle circumference formula to solve practical problems. 2. Be able to flexibly use the formula of circle circumference to solve simple practical problems, and be able to express...

"Calculate the area of ​​a given circle's diameter" PPT courseware on the circumference and area of ​​a circle:

"Calculate the area of ​​a given circle's diameter" Circumference and area of ​​a circle PPT courseware Teaching objectives 1. Combined with specific examples, experience the process of flexibly using the area formula of a circle to solve simple practical problems. 2. Master the calculation method of finding the area of ​​a known diameter, and be able to solve simple problems in life..

"Calculate the area of ​​a given circle's circumference" PPT courseware on the circumference and area of ​​a circle:

"Calculating the Area of ​​a Given Circumference" Circumference and Area of ​​a Circle PPT Courseware Teaching Objectives 1. Combined with specific examples, experience the process of comprehensively using circle knowledge and life experience to solve practical problems. 2. Master the calculation method of finding the area of ​​a given circle's circumference, and be able to solve problems related to circular surfaces..

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Update Time: 2024-09-22

This template belongs to Mathematics courseware People's Education Press Sixth Grade Mathematics Volume 1 industry PPT template

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