| Category | Format | Size |
|---|---|---|
| People's Education Press Fifth Grade Science Volume 1 | pptx | 6 MB |
"The Function of Gears" Construction and Simple Machinery PPT Courseware 2
Description
"The Function of Gears" Construction and Simple Machinery PPT Courseware 2
Do these gears have anything in common?
Round with teeth on the edge
There is a shaft that can rotate
I can do it
Put the gears you made together and turn them around. Do you find anything?
Standard gear requirements:
Gear materials must have a certain hardness
Gears must be round
The gear teeth assembled together must be of the same size
The fixed axis of the gear must be in the center
Collaborative exploration:
Use the gear model to explore the role of gears.
1. Design the experimental plan.
Group Discussion: What is the purpose of gears? Research on how to assemble the gears.
2. Report the experimental plan
3. Conduct experiments to explore the role of gears.
Conduct research according to the experimental plan just now. During the research process, carefully observe the experimental phenomena and make good records.
Apply what you learn:
The hour hand, minute hand, and second hand of the alarm clock are on the same axis, and they all rotate clockwise. How many gears are needed? How can they be combined?
1. Let the group guess first.
2. Open the back cover of the alarm clock and take a look. Do you have the same idea as the group? Why?
after class homework:
After class, work in groups to prepare gears and assemble a clock. Let’s see which group is more innovative!
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For more information about the PPT courseware "The Function of Gears in Construction and Simple Machinery", please click on the PPT tag of "The Function of Gears in Construction and Simple Machinery PPT".
"The Function of Gears" Architecture and Simple Machinery PPT Courseware:
"The Function of Gears" Architecture and Simple Machinery PPT Courseware Bicycles use gears and chains to travel. Transmission device: Main structures: gears and chains. Do these gears have anything in common? A circle with teeth on the edges and a shaft in the middle that can rotate. The requirements of a standard gear...
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Update Time: 2024-06-19
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