Lesson 2: Transmitting data

This lesson which is all about data transmission will teach pupils about the different types of infrared devices and how infrared signals are sent. They will compare infrared with QR codes that were covered in the last lesson and discover the pros and cons of both methods of data transmission.

Before the lesson

Download classroom resources

Learning objective

  • To know how infrared waves transmit data

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: Enable these children to use the most user-friendly cameras/devices, or to bring devices which they are familiar with. Encourage them to take a video rather than trying to capture a photo.

Pupils working at greater depth: Children may even be able to recognise that each button on the device will transmit a slightly different sequence of flashes, like a binary/Boolean signal.

Wrapping up

Assessing pupils' progress and understanding


Created by:
Richard Williams,  
Computing specialist
Richard is a Year 6 Teacher at St. Pancras Primary School. Richard’s passion for teaching was recognised when he received Suffolk’s ‘Raising The Bar’ award for Innovation 2016. With his class he made the world’s first guided VR:360 school tour…
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Lesson 1: Barcodes Previous Lesson
Lesson 3: RFID Next Lesson