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Cracking Code Breakers (KS2)

Teach the story of Colossus, the General Post Office, Tommy Flowers and Second World War code breaking in your classroom.

Download full Cracking Code Breakers learning resource

CREST SuperStar Challenges

Topics 2 and 3 include British Science Association CREST SuperStar Challenges. Run the Challenges and download CREST SuperStar stickers.

01 - The GPO - The Heart of Communication

Learn how General Post Office engineers worked hard to build Colossus and discuss the skills needed to be an engineer.
02 - Tommy Who?

Learn about sending secret messages and work as a team to gather data and design a machine to solve a problem.
03 - Building Colossus

Learn about the original blueprint for Colossus, how to read a map, design a blueprint and make a scale drawing.
04 - Cryptic Messages

Learn how secret messages were sent using binary code and tapes, design a code and write a cryptic message.
05 - Cracking the Code

Learn how to decipher different codes and work as a team to translate a message from German.
06 - Digital Security

Learn about digital security, discuss how to protect our personal information and what makes a strong password.