| Category | Format | Size |
|---|---|---|
| Beijing Normal University Sixth Grade Mathematics Volume 1 | pptx | 6 MB |
"Perimeter of a Circle" Circle PPT Courseware 3
Description
"Perimeter of a Circle" Circle PPT Courseware 3
Measurement activities:
Work together with deskmates to measure the circumference of the circular learning tool.
Reporting tips:
⑴ While demonstrating, explain how you measured the circumference of this circle.
⑵In order to make the measurement data accurate, what issues did you pay attention to.
practice
1. Draw a circle with a diameter of 10cm.
⑴Think about it, how to get its circumference?
⑵Cut out the circle and measure it.
⑶ Measure several times and calculate the average of the measurement results.
2. Look at the picture and think about the following questions, then fill in the blanks.
The circumference of a square is ( ) times the diameter of a circle,
So the circumference/diameter of the circle must be less than ( ).
4. The radius of a car wheel is 0.3m. How many meters does it travel in one revolution? If you roll 1000 times, how many meters will you advance?
3.14×0.3×2=1.884 (meters)
1.884×1000＝1884 (meters)
Answer: It rolls forward 1.884 meters in one revolution. Roll 1000 times and advance 1884 meters.
5. Xiaoxiao walked around the edge of the flower bed for 62.8 meters. What is the diameter of this flower bed?
62.8÷3.14＝20 (meters)
Answer: The diameter of this flower bed is 20 meters.
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For more information about the "Perimeter of a Circle" PPT courseware, please click the "Perimeter of a Circle ppt circle ppt" tag.
"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..
File Info
Update Time: 2024-07-07
This template belongs to Mathematics courseware Beijing Normal University Sixth Grade Mathematics Volume 1 industry PPT template
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