draw what I say
The aim of this task is highlighting the importance of clear and precise instructions. Make the point that computers follow many simple instructions and will not fill in gaps or make assumptions like we do as humans.
Hand paper to each pupil. Pupils should draw what you say. No questions allowed, do in silence. Start with a simple shape. Pupils then hold up and show each other. Amusement may following. Then perhaps build up to a simple house or animal…
next pair pupils up to take it in turns to explain to each other their own simple drawings, repeating a couple times.