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?
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
Show health and safety information
Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.