a tool that finds websites based on the search term used

a list that helps find and organise information quickly

a program that visits websites and collects information to help create a search engine’s index

Selecting search results

Computing

Digital systems

Computer systems in society

Searching the web

How search results are ranked

How search results can be influenced

In this unit pupils will explore computer systems and how information is transferred between devices. They will explore the input, output and processes of a variety of different real-world systems. Pupils will discover how information is found on the WWW through learning how search engines work.

Introduction to computer systems

a program that visits websites to gather information

Arrange the steps in how a search engine works:

What do search engines look at to find results for a search term?

What program collects information to create a search engine’s index?

Web crawlers search the internet directly.

Search engines check every website for every search term.

Search engines rely on indexes to find results.

It organises web page information for quick retrieval.

Why is an index important for a search engine?

a precise set of steps to complete a task

words typed into a search engine to find information

a precise set of ordered steps to do a task

Which of these is NOT a feature of a search engine?

Why is it useful to know how search engines work?

Selecting search results

Lesson outcome