# Randomisation

In computer science, random numbers are something that you are likely to use regularly. They are also used in areas such as cryptography, while pseudorandom numbers are used in video games, modelling, and simulations. In this lesson, you will be introduced to the concept of random numbers using Python documentation. You will determine what the random module is capable of, and how random numbers can be generated in Python.

# 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:

# Randomisation

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

## Question 4

Q1.True or False: Pseudorandom number generation uses mathematical algorithms which are computer-generated and therefore highly predictable.

1/4

Q2.If you want to comment on your code over multiple lines, what syntax should you use?

2/4

Q3.When using the function randrange(1,5,2), what is the third value in the brackets used for?

3/4

Q4.When using the function randrange(1,5,2), what is the second value in the brackets used for?

4/4

Quiz:

# Randomisation

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

## Question 4

Q1.True or False: Pseudorandom number generation uses mathematical algorithms which are computer-generated and therefore highly predictable.

1/4

Q2.If you want to comment on your code over multiple lines, what syntax should you use?

2/4

Q3.When using the function randrange(1,5,2), what is the third value in the brackets used for?

3/4

Q4.When using the function randrange(1,5,2), what is the second value in the brackets used for?

4/4

# Lesson summary: Randomisation

### 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

### Take part in The Big Ask.

The Children's Commissioner for England wants to know what matters to young people.