"I'll make a small switch" PPT courseware

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E-education edition third grade science volume 2	pptx	6 MB

"I'll make a small switch" PPT courseware

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Upload Time: 2024-11-17

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"I'll make a small switch" PPT courseware

Observation skills

1. What is the path of current in the circuit? Try to mark the path of the current.

2. Observe the switch of the flashlight and see what materials the switch is made of.

Flashlight observation summary

1. Current path: as shown in Figure 1

2. The flashlight switch is composed of plastic and copper pieces. Push the red plastic push button and the two copper pieces will come into contact and the circuit will be connected.

What is a switch?

Can connect or disconnect the circuit and control the working status of the electrical components in the circuit

Think about it, how to make a small switch

Compare the flashlight switch diagram: Use paper clips as contact pieces of the switch and use thumbtacks to secure the wires.

Better hands-on ability

Reminder: Be careful not to leave thumbtacks on the ground, otherwise you may injure your feet; focus on cooperation.

Research on production methods of traffic lights

Thinking expansion:

We press the paper clip onto the thumbtack below, and the light behind the thumbtack will light up. Now I want to add a light, what should I do?

After school activities:

Please go home and investigate the switch of at least one household appliance and what kind of switch it is.

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For more information about the PPT courseware "I'll Make a Small Switch", please click the "I'll Make a Small Switch" ppt tag.

"I'll make a small switch" PPT courseware 2:

"I'll Make a Small Switch" PPT Courseware 2 Do you still remember the reason why the small light bulb shines? When the current flows from one end of the power source through the wire, flows through the small bulb (circuit), and returns to the other end of the battery, forming a complete loop, the small bulb will glow. As long as the electricity can...

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Update Time: 2024-11-17

This template belongs to science courseware E-education edition third grade science volume 2 industry PPT template

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"I'll make a small switch" PPT courseware