2.3 Sound moves

​ Topic 2.3 Sound moves (Lesson 1)

Learning Objectives

1Ps.02 Investigating how sound gets quieter as it moves away from the source.

1TWSc.04 Follow instructions safely when doing practical work.

Learning Outcomes (SWBAT)

1. Describe how sounds change when the sound source is hear or far away.

2. Use equipment safely when doing practical work.

Set Induction (5 mins)

1. W: Introduce the picture of a man on the boat. Prompt S to think why no one can hear the man.

2. W: Have a discussion about the picture. Encourage S to think about their life experience when the sound source is far/near.

Lesson Development

Activity 1: Teaching concepts (15 mins)

1. W: Introduce that sound travels.

2. W: Show S the picture in learner’s book, explain the volume of the sound.

Activity 2: Thinking like a scientist (20 mins)

1. W: Conduct a simple demonstration with the class. Have some S to stand outside the classroom/in the toilet, have another group of students to read the poem. Ask S if they are able to hear the poem clearly. Exchange the two groups/location and try with another poem.

2. T: Introduce thinking like a scientist activity. Have 4 volunteers to role-play like the activity.

3. W: Guide S to make their prediction.

4. G: Conduct the activity, have S to share if the prediction was correct.

5: W: Explain sound and distance by showing the video. Link: https://www.youtube.com/watch?v=fYS5Uvlzr-0

Activity 3: Take care of ears (15 mins)

1. W: Discuss ways to protect our ears.

2. I: Answer questions to check the understanding.

Closure (5 mins)

1. W: Review that sound travels and the volume of sound will change depending on the distance.

2. W: Explain about holiday homework about taking photo of sound sources.

Unit2.3
Sound
moves

01

Lesson1

1Ps.02 Investigating how sound gets quieter as it moves away from the source.

1TWSc.04 Follow instructions safely when doing practical work.

Aim:

1.

Describe how sounds change when the sound source is near or far

away.

2.

Use equipment safely when doing practical work.

Success Criteria:

John was an adventurer who loved nothing more than exploring the open waters on his sailboat. As he set out on his latest journey, he felt exhilarated. The sun was shining, the wind was blowing, and the water was calm.

​Suddenly, a strong gust of wind caught the sails, and John lost control of the boat. The boat began to tip, and water started to pour in.

John tried to right the boat, but it was too late. The boat sank, and John was thrown into the water. He struggled to stay afloat and shouted for help...

Sailing Adventure

Learner’s Book page 32

Take a look at
this picture
carefully.

Multiple Choice

From the picture, can anyone hear John?

• Yes

• No

Multiple Choice

Why can't Liza hear John?

• Liza is wearing headphone.

• Liza has ear problem.

Multiple Choice

Why can't the sailors hear John?

• The sailors have headphones.

• The sailors are too far away.

Open Ended

What can John do to make people hear him?

Sounds move away

from a

sound source.

Sound is louder when the
sound source is near.

near

When the sound source is
far away, the sound is
softer/quiet.

far away

Activity

Time

Can you hear this?

Learner’s Book page 33

Think like a scientist.

Amy

Ben

Clara

Dim

Multiple Choice

Let's predict: Who will be able to hear the sound most loudly?

• Ben

• Clara

• Dim

Multiple Choice

Let's predict: Who will be able to hear the sound most quietly?

• Ben

• Clara

• Dim

Multiple Choice

How does the sound change when Clara walks nearer to Amy?

• Clara will hear the sound louder.

• Clara will hear the sound softer.

• Clara will hear the sound very softly.

Activity 3:

Take care of our ears

We can wear a pair of earmuffs when we are working with loud sounds.

​

​Loud sounds can hurt your ears!

Don't listen to very loud sounds.

​

​Loud sounds can hurt your ears!

Don't stick things into your ears.

Clean the outer ears.

​

Don't listen to very loud sounds.

Wear earmuffs when working with loud sounds.

Keep your ears clean.

Don't stick things into your ears.

Check your understanding

Multiple Choice

Anything that makes a sound is called_____________

• Music

• Sound

• Source sound

• Music instrument

Multiple Choice

You standing beside someone that playing a drum. The sound that you hear is more________

• Softer

• Louder

• Bigger

• Smaller

Multiple Choice

You standing far away from someone that playing a drum just like in the picture. The sound that you hear is more________

• Softer

• Louder

• Bigger

• Smaller

Multiple Choice

We can hear the sound when the sound goes into our ...

• mouth

• nose

• eyes

• ears

Multiple Choice

Look at the picture. Bill cannot hear the sound clearly because ________.

• Bill does not like the sound

• Bill stands near the speaker.

• Bill does not know the sound

• Bill stands far away from the speaker.

Let’s
review

Observe like a scientist!

During your Raya holidays, take a picture of a sound source. Share your wonderful picture in Telegram group. Remember to state whether it needs electricity to make sound.

Happy holidaywork

1Ps.02 Investigating how sound gets quieter as it moves away from the source.

1TWSc.04 Follow instructions safely when doing practical work.

Aim:

1.

Describe how sounds change when the sound source is near or far

away.

2.

Use equipment safely when doing practical work.

Success Criteria: