# Logical expressions

In this lesson, we will deepen our understanding of logical expressions by introducing the operators AND and OR. It will begin with a Parson's Problem to check our understanding of selection. It will then move on to an unplugged activity that introduces AND and OR. We will walk through code, and investigate it before writing our own logical expressions.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
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.If you want to increase the value held in the score variable by 1, which line of code should you use?

1/2

Q2.What does this logical operator represent? !=

2/2

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
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.If you want to increase the value held in the score variable by 1, which line of code should you use?

1/2

Q2.What does this logical operator represent? !=

2/2

# 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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Logical Expressions

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

Q1.If the user enters the colour: red and the suit: spades. What will the output be of this program?

1/3

Q2.If the user enters the colour: black and the suit: hearts. What will the output be of this program?

2/3

Q3.If the user enters the colour: black and the suit: diamonds. What will the output be of this program?

3/3

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Logical Expressions

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

Q1.If the user enters the colour: red and the suit: spades. What will the output be of this program?

1/3

Q2.If the user enters the colour: black and the suit: hearts. What will the output be of this program?

2/3

Q3.If the user enters the colour: black and the suit: diamonds. What will the output be of this program?

3/3

# Lesson summary: Logical expressions

## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Dance