Tooltip
These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.

Spit-Not-So

This activity from the CS4FN team at QMUL is a metaphorical introduction to Human-Computer Interaction (HCI), graphical user interfaces (GUIs) and the difficulties of working at the command line.

The whole-class activity uses a game called spit-not-so. The winner of the game is the first to choose, from a short list, three words which all contain the same letter. Using a secret algorithm, the teacher then recreates the game on a hidden ‘noughts and crosses’ board. By reorganising the list into a different format it is made easier to work with – similar to why GUIs exist. It also demonstrates how data structures can make a significant difference to how easy the data is to manipulate.

Links are made between the activity and development of computational thinking skills. Extension activities and further reading are also suggested.

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.

Information on the permitted use of this resource is covered by the Category Three Content section in STEM Learning’s Terms and conditions.