Lesson 5: Understanding packets

Through a practical activity, children learn that websites are split into small pieces, sent via the Internet which are encoded with information to get them to the right place

Before the lesson

Download classroom resources

Learning objective

  • To understand the role of packets

National curriculum

Pupils should be taught to:

  • Understand computer networks including the internet; how they can provide multiple services, such as the World Wide Web, and the opportunities they offer for communication and collaboration

Success criteria

Cross-curricular links

Attention grabber

Main event


Pupils needing extra support: Might need reminding of what to do when they receive a packet.


Pupils working at greater depth: Should remind others of the importance of ‘time to live’.

Wrapping up

Assessing pupils' progress and understanding


Created by:
Sway Grantham,  
Computing specialist
Sway Grantham (@SwayGrantham) is a Primary School Teacher, a CAS Master Teacher and Specialist Leader in Education for Primary ICT. She also has a BCS Certificate in Computer Science Teaching (Primary). She has written several curricula and conducted research into the…
Find out more