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In this computer science lesson students are introduced to encryption. They model the way that information is transmitted by the internet and try and protect their messages using different keys. Light - there's more to it than meets to the eye. Data from one computer is converted into super-fast pulses of light which can be sent down optical fibres to others all around the world. However, information sent via the internet is at risk from eavesdroppers - how can science help keep our secrets?

Learning Outcomes

  • Students state what encryption means and describe why it is important

  • Students can explain how information is transmitted over the internet

  • Students can use simple encryption


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