This Computing scheme of work video introduces the key knowledge and vocabulary pupils will need when exploring computer networks in this unit. It builds a foundation for understanding how digital systems are connected and communicate with each other.

Pupils begin by learning what a network is—a group or system of connected people or things. In computing, this means connected devices, not just computers, but also printers, routers, and more. The video explains the difference between wired and wireless networks: wired networks use physical cables, while wireless networks use radio waves, most commonly via Wi-Fi.

An important distinction is made between networks and the internet. A local network, like the one in a school or home, connects devices within the building. The internet is much larger—it connects networks from around the world, allowing devices to access websites, send emails, or share data beyond their immediate environment.

The video also explores the purpose of networks: improving communication, collaboration and efficiency by allowing multiple devices to share resources.

Pupils are reminded that a network doesn’t always need the internet to function. Wireless connections can still allow information to be shared between devices if they’re on the same network. This video is part of the Year 3 Computing systems and networks 1: Networks unit.

See more of our Year 3 Computing scheme of work.

Computing, Year 3, Computing systems and networks 1: Networks, Lesson 1: What is a network?.