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"Protecting Our Hearing" Sound PPT Download
Part 1: Importing new lessons
Do students usually like to play with toys?
Today we are also going to play with toys. We are not only competing to see who can play well, but also competing to see who has gained more knowledge while playing. Today the teacher brought you several toys and put a few beans in a plastic can to make a sound-producing device - a sound can.
Protect our hearing PPT, part 2: new lesson learning
Activity 1: Explore controlling the sound of objects
Sound can: Put a few soybeans in a plastic can or can to make a sound can
Discussion: How to make the sound of the sound can softer?
Think about it:
(1) Cover it with your hands and the sound will become softer
(2) Try wrapping it in paper
Do hands-on experiments to test predictions
How can I make the sound of the sound can softer?
Control sound sources and block propagation paths
Protect our hearing PPT, part three: conclusion summary
What did you gain from today’s study? Group discussions and exchanges, representatives speaking.
Controlling the sound source and blocking the propagation path are the fundamental methods to control the sound produced by objects.
Protect our hearing PPT, Part 4: Classroom exercises
1. Our ears are ours ( ) and need careful care. Reducing harmful sounds is important to protect our hearing and physical health.
2. The harm of noise to people: Sound ( ) damages our hearing, so we should try to stay away from these sounds. Sometimes we need to cover our ears or wear protective devices.
3. The ways to protect our hearing are: ( ), ( ).
Protect our hearing PPT, Part 5: Homework assignments
How do people control and eliminate noise pollution?
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"Protecting Our Hearing" Sound PPT:
"Protecting Our Hearing" Sound PPT Part One: Group Discussion How to stay away from noise? Cover your ears, wear protective devices, listen to pleasant music, and stay away from the sound source. Tip: Frequent use of earplugs to listen to music can cause fatigue or even damage to the hearing organs, thus...
"How We Hear Sound" Sound PPT Download:
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"How We Hear Sounds" Sound PPT:
"How We Hear Sound" Sound PPT Part 1 Content: The Structure and Function of the Ear Observe the structural diagram of the ear. Think about what are the main functions of the outer ear, middle ear, and inner ear? Share your ideas within the group. Sound ear canal tympanic membrane auditory ossicles cochlea auditory nerve large...