Lesson Eleven

This lesson looks at how devices collect personal data and how that data can be used by different organisations.

Internet of Things devices

The Electric Garden is an Internet of Things device. This means that it is connected to the internet and collects data about its surroundings, which it then shares with other people or devices online.

Think about what you have used this week that might collect data. For example:

  • Your bus pass could track where you get on and off the bus. Does it know where you live and where you go to school?

  • A smart watch can track your location, but also things like your heart rate. Can it tell where you’ve been and whether you were excited to be there?

  • Online video streaming sites track what you’ve watched so they can recommend similar videos for you to watch. Does it know what your favourite show is?

Who do you think has access to this data? It is useful to anyone?



When working with new technology, do we have a responsibility to use that technology to improve our lives and the lives of others? Discuss this question with the people around you. Try to back up your argument with evidence!

Error Detection

When using large data sets, errors can occur and computers need to be able to identify when mistakes have happened. One way they can do this is by using parity, or the condition of things being the same. Watch the video below. Can you figure out how the teacher uses parity to figure out which tile has been changed? Print your own set of parity cards and try the trick out for yourself!