# Always another way

In this lesson, we will be introduced to alternative (symbolic) representations for images and sound, such as vector graphics and MIDI music. We will also be introduced to what compression is and why it is necessary.

# 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:

# Always Another Way

Helps you to assess your knowledge and understanding of the unit Data Representation going audiovisual.

Q1.Images can be represented as sequences of colour samples, encoded in binary. What are these images called? (Tick 2 boxes)

Select two (2) boxes

1/5

Q2.Sounds can be represented as sequences of sound samples, encoded in binary. What are these sounds called?

2/5

Q3.Images can be represented as collections of geometrical shapes (each with its own attributes). What are these images called?

3/5

Q4.Music can be represented as a sequence of musical notes (with information on how to play them). What is an example of this called?

4/5

Q5.What is a procedure that reduces the size of a representation called?

5/5

Quiz:

# Always Another Way

Helps you to assess your knowledge and understanding of the unit Data Representation going audiovisual.

Q1.Images can be represented as sequences of colour samples, encoded in binary. What are these images called? (Tick 2 boxes)

Select two (2) boxes

1/5

Q2.Sounds can be represented as sequences of sound samples, encoded in binary. What are these sounds called?

2/5

Q3.Images can be represented as collections of geometrical shapes (each with its own attributes). What are these images called?

3/5

Q4.Music can be represented as a sequence of musical notes (with information on how to play them). What is an example of this called?

4/5

Q5.What is a procedure that reduces the size of a representation called?

5/5

# Lesson summary: Always another way

## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga