Lesson 2: A file's journey

Children create an animation to show their understanding of how a file is shared between two devices on a network

Before the lesson

Download classroom resources

Learning objective

  • To understand how information moves around a network and begin to recognise real world networks

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
  • Design, write and debug programs that accomplish specific goals, including controlling or simulating physical systems; solve problems by decomposing them into smaller parts

Success criteria

Cross-curricular links

Attention grabber

Main event


For pupils needing extra support: Provide them with algorithms and blocks to match together.


Pupils working at greater depth: Should show what would happen if someone wanted to print something from the laptop to the photocopier, including what would happen if the printer ran out of paper.

Wrapping up

Assessing pupils' progress and understanding


Created by:
Cat Lamin,  
Computing specialist
Cat was a committed primary school teacher for twelve years. After starting her independent consultancy ‘Crossover Solutions’ she has travelled to Argentina, Brazil and America to share her wealth of knowledge of computer science with other teachers. Her enjoyment for…
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