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Debugging Shapes (computer science)

  • CalendarAvailable on request
  • Clock outlineFlexible
  • Available in Welsh

Debugging is something we do all the time in computer science. It’s the process of working through code and fixing any mistakes or making improvements.

Being able to debug in computer science is very important  as it identifies problems with the computer programme which may stop it from working effectively. It also means that our programmes run in the way that they should.

This resource provides a simple, unplugged (no computer required) activity to help pupils understand the debugging process.

Download the Debugging Shapes activity pack (PDF).

Find out more

For more information about the activity, please visit our website.

About the organiser

This activity is organised by School of Computer Science and Informatics. Contact Cheryl McNamee-Brittain at for more details.

How to book

No booking required.

TicketThis activity is free

GlobeAccess the activity resources online


  • TickFamilies
  • TickFoundation - ages 3-7, foundation year and years 1 and 2
  • TickKey stage two - ages 7-11, years 3-6

Curriculum themes

  • TickScience and technology
  • TickDigital competency

Activity type

  • TickActivity


  • TickExtracurricular or independent learning
  • TickProfessional development (CPD) for teachers
  • TickSupporting curriculum themes
  • TickWidening university participation

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  • Technocamps
  • Welsh Government