"Circumference of a circle" PPT courseware

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Update Time: 2024-11-22

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"Circumference of a circle" PPT courseware Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!

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"Circumference of a Circle" PPT courseware The quotient of the circumference of a circle divided by the diameter is a fixed number. We call it pi, denoted by the letter π. About 1500 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, and became the first person in the world to calculate the value of pi to 7 decimal places. His great achievement was at least a thousand years earlier than the time when foreign mathematicians obtained 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 letters ( ), it was discovered by ancient Chinese mathematicians ( ). (2) I also know that the circumference of a circle is always ( ) times its diameter. Knowing the diameter of a circle, you can use the formula ( ) to find the circumference; knowing 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 does it travel 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 runway in the playground of Yucai Primary School. How long is the outer circle of the runway in meters? How long is the inner circle in meters? (Each end is a semicircle) ... ... This courseware gives a comprehensive introduction to circles through small games and exercises, which improves students' interest in learning and helps students better understand and remember the meaning of circles Knowledge points are very good classroom teaching courseware. Keywords: Circle courseware, Knowing Circles courseware, Xinrenjiao Edition sixth grade mathematics PPT courseware, sixth grade mathematics slide courseware download, Circle PPT courseware download, Knowing Circles PPT courseware download, .ppt format More about "Knowing Circles 》For PPT courseware, please click on the ppt tab. "Use the circle circumference formula to solve practical problems" circle circumference and area PPT courseware: "Use the circle circumference formula to solve practical problems" circle circumference and area PPT courseware teaching objectives 1. Combining with specific examples, experience flexible application The process of solving practical problems with the circumference length formula. 2. Can flexibly use the circle circumference formula to solve simple practical problems, and be able to express the circumference and area of ​​a circle in "Calculating the Area of ​​a Known Circle's Diameter" PPT courseware: "Calculating the Area of ​​a Known Circle's Diameter" Area PPT courseware teaching objectives 1. Combining 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 calculating the area of ​​a known diameter, and be able to solve simple problems in daily life.. "Calculate the area of ​​a known circle" PPT courseware of the circumference and area of ​​a circle: "Calculate the area of ​​a known circle" The sum of the circumference of a circle Area PPT courseware teaching objectives 1. Combining specific examples, experience the process of comprehensively using circle knowledge and life experience to solve practical problems. 2. Master the calculation method of calculating the area of ​​the known circle's circumference, and be able to solve the problems related to the circular surface..