# Who was Alexander Graham Bell?

In this lesson, we will learn about why Alexander Graham Bell was inspired to invent the telephone. We will recap what sound is and learn how a telephone works. We will also look at the controversy over the telephone patent!

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What was Katherine Johnson's favourite subject?

1/5

Q2.What was Katherine Johnson's first job?

2/5

Q3.How many times did John Glenn orbit the Earth?

3/5

Q4.What went wrong on Apollo 13?

4/5

Q5.What does trajectory mean?

5/5

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What was Katherine Johnson's favourite subject?

1/5

Q2.What was Katherine Johnson's first job?

2/5

Q3.How many times did John Glenn orbit the Earth?

3/5

Q4.What went wrong on Apollo 13?

4/5

Q5.What does trajectory mean?

5/5

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Quiz:

# Who is Alexander Graham Bell?

Don't worry if you get a question wrong! Forgetting is an important step in learning.

Q1.When something makes a sound what happens to the particles in the air?

1/4

Q2.Which of these came first?

2/4

Q3.A telephone works by converting sound to ______________ and then back to sound.

3/4

Q4.What is a patent?

4/4

Quiz:

# Who is Alexander Graham Bell?

Don't worry if you get a question wrong! Forgetting is an important step in learning.

Q1.When something makes a sound what happens to the particles in the air?

1/4

Q2.Which of these came first?

2/4

Q3.A telephone works by converting sound to ______________ and then back to sound.

3/4

Q4.What is a patent?

4/4

# Lesson summary: Who was Alexander Graham Bell?

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga