"The Secret of Wheels and Axles" Tools and Machinery PPT Download

Description

"The Secret of Wheels and Axles" Tools and Machinery PPT Download

Part One: Preliminary Exploration

A machine like a faucet where the wheel and axle are fixed together and can rotate is called an axle.

(1) What is the function of the axle?

Discussion: If you take off the wheel of the faucet and twist the shaft directly, will it be easier to open the faucet? Think about the role of the wheel and axle.

Game: Compare strength

How to play: Use a screwdriver to play a strength-comparison game with your classmates. Do not hold the tip of the screwdriver during the game.

Discussion: What are the wheels and axles in life? What convenience does it bring to our work?

Such as car steering wheels, door handles, faucets, windlass, wrenches, key holes, etc. Therefore, the convenience that the wheel axle brings to us is labor saving.

The secret of the wheel and axle PPT, part two: expansion and extension

The essence of the wheel axle is a lever that can rotate continuously. The fulcrum is at the center of the axis. When the axle rotates, the wheel and the axle have the same speed. When power acts on the wheel, the axle is a labor-saving lever; when power acts on the shaft, the axle is a labor-saving lever.

Summary of this lesson

A machine that can rotate by fixing the wheel and axle together is called an axle. Applying force on the wheel of the axle saves effort, and the larger the wheel, the less effort it takes.

The Secret of Wheel and Axle PPT, Part 3: Classroom Training

1. Fill in the blanks

1. Like a faucet, the axle and axle are fixed together and can rotate ( ), it is called an axle.

2. Applying force to the ( ) of the wheel axle can save effort. The larger the ( ), the more effort it will save.

3. For a screwdriver, it takes less effort to apply force on ( ) than on ( ).

2. Choice

1. In the game of strongman, do not hold your hands ( )

A.Tool handle B.Tool shank C.Tool tip

2. The function that the axle brings to us is ( )

A. Effortless B. Effortless C. No effort, no effort

3. The following ( ) is not a wheel or axle

A. Keyhole B. Windlass C. Pressure rod of water well

The Secret of the Wheel and Axle PPT, Part 4: Homework

After class, look around. Where are axles used around us?

Keywords: Free download of Chinese PPT courseware for the first volume of the sixth grade in the textbook version, PPT download of the secret of the wheel and axle, PPT download of tools and machinery, .PPT format;

For more information about the PPT courseware "The Secret of Tools and Mechanical Wheels and Axles", please click the "Secrets of Tools and Mechanical Wheels and Axles" ppt tag.

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Update Time: 2024-09-30

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 1 industry PPT template

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