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Year 4 Computer science

KS2 Computing videos, quizzes and activities that will help students practise their computer science knowledge and skills.

Part of Computing

  • Computer science

    • All about algorithms

      Find out all about algorithms in this guide for Years 3 and 4.

    • What is decomposition?

      Decomposition is breaking tasks into smaller parts. Find out how to use it and why it's helpful in this guide for Years 3 and 4.

    • What is logical reasoning?

      Find out what logical reasoning is and how to use it in this guide for Years 3 and 4.

    • How are computer programs constructed?

      Find out how computer programs are constructed and why sequencing and repetition is important in this guide for Years 3 and 4.

    • What are inputs and outputs?

      Find out about different devices and the kinds of inputs and outputs with this guide for Years 3 and 4.

    • What is a variable and how do computers use them?

      Computers use different variables. Find out what a variable is and how a computer uses them with this guide for Years 3 and 4.

    • Real life robots

      Robots are used in every day life. Discover what robots do with this guide for Years 3 and 4.

    • What is debugging?

      Sometimes digital devices have a bug. Find out how to debug digital devices with this guide for Years 3 and 4.

    • What is a computer network?

      Computers are connected all around the world. Find out more about the main parts of a computer network with this guide for Years 3 and 4.

    • How does the internet work?

      The internet helps us to stay connected and find out information. Find out how the internet works in this guide for Years 3 and 4.

    • What is the world wide web?

      Find out about the world wide web in this guide for Years 3 and 4.

    • How do search engines work?

      You can search the internet to find out lots of information. Find out how search engines work to find this information in this guide for Years 3 and 4.