# Linear search

In this lesson, learners are introduced to one of the two searching algorithms they need to know about: linear search. They will go over the steps of carrying out a linear search, and perform a linear search in real life and with a sample of data.

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!

## Question 4

Q1.'Calculates the remainder of a division.'

1/4

Q2.'Calculates the whole number of times the divisor will go into the dividend '

2/4

Q3.State the result of the following calculation in Python: 14 % 4

3/4

Q4.State the result of the following calculation in Python: 28 // 5

4/4

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!

## Question 4

Q1.'Calculates the remainder of a division.'

1/4

Q2.'Calculates the whole number of times the divisor will go into the dividend '

2/4

Q3.State the result of the following calculation in Python: 14 % 4

3/4

Q4.State the result of the following calculation in Python: 28 // 5

4/4

# 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:

# Linear Search

This quiz is to assess your learning from this lesson. Read the description below and select which term it is referring to:

## Question 4

Q1.What card would you need to search for, for the best-case scenario to occur?

1/4

Q2.What card would you need to search for, for the worst-case scenario to occur?

2/4

Q3.How many comparisons would it take to work out that a card wasn’t in the set of cards?

3/4

Q4.When carrying out the linear search, does the data need to be ordered?

4/4

Quiz:

# Linear Search

This quiz is to assess your learning from this lesson. Read the description below and select which term it is referring to:

## Question 4

Q1.What card would you need to search for, for the best-case scenario to occur?

1/4

Q2.What card would you need to search for, for the worst-case scenario to occur?

2/4

Q3.How many comparisons would it take to work out that a card wasn’t in the set of cards?

3/4

Q4.When carrying out the linear search, does the data need to be ordered?

4/4

# Lesson summary: Linear search

### Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Chair yoga

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