This Computing scheme of work video introduces teachers to how files are transferred across a network. It supports classroom delivery by breaking down the unseen processes behind everyday actions such as sharing images, documents and audio.

The video explains how file types like JPEGs or MP3s move between devices and shows the role of routers, switches and servers in ensuring smooth transmission. Teachers are guided through the stages of a file request: from a device to the wireless access point, across the wired network, through a switch and via the school server before reaching the recipient’s device.

The video also models the accompanying unplugged role-play activity, where pupils act out each stage of the transfer, reinforcing understanding through practical participation. This resource helps teachers feel confident in explaining networking hardware and coordinating the lesson.

See more of our Year 3 Computing scheme of work.

• Computing, Year 3, Computing systems and networks 1: Networks, Lesson 2: A file’s journey.
• Computing, Year 3, Computing systems and networks 1: Networks.