"Gear" PPT courseware

Description

"Gear" PPT courseware

Part One: Teaching Objectives

1. Know that scientific inquiry can provide new experiences, new phenomena, new methods, and new technologies for further research, and be able to consult books, periodicals, and other information sources.

2. Recognize that science is constantly developing and be willing to use the scientific knowledge learned to improve life.

3. Know that gears can be used to transmit power and change the speed and direction of rotation; use them to improve work efficiency; understand the use of gears in production and life.

Part 2: What gears have in common

Can you tell me what characteristics these gears have in common?

Round with teeth on the edge

There is a shaft that can rotate

Guess and tell:

What role do the gears of simple machines play in work? Students can make guesses and talk based on their own experiences.

Part 3: Do it

Do it: (Gear requirements)

1. The gear material must have a certain hardness.

2. The gear must be round.

3. The size of the gear teeth assembled together must be consistent.

4. The fixed shaft of the gear must be in the center.

I can do it:

Put the gears you made together and turn them around. Do you find anything?

Part 4 Content: 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.

Part 5: Function of gears:

Not only did we know that gears can transmit force, we also discovered that they can change the speed of rotation and the direction of motion.

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?

Part 6 Contents: Homework:

After class, work in groups to prepare gears and assemble a clock. Let’s see which group is more innovative!

Keywords: Qingdao version fifth grade science PPT courseware free download, gear PPT download, .PPT format;

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

Colorful five-gear linkage relationship PPT chart:

This is a colorful five-gear linkage relationship PPT chart, in .PPTX format;..

Gear linkage relationship PPT chart:

This is a PPT chart of gear linkage relationship, with a colored bar chart on the left side and data analysis. .PPTX format;..

Colorful and exquisite 7 gear linkage relationship PPT chart:

This is a colorful and exquisite flat style PPT chart of the linkage relationship composed of 7 gears. Data details and explanatory text can be added below the chart. .PPTX format;..

File Info

Update Time: 2024-11-22

This template belongs to science courseware Qingdao Edition Fifth Grade Science Volume 1 industry PPT template

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