Another ‘no preparation’ lesson standby that works: especially with Higher classes. Students are in groups. They each get a question on a piece of sugar paper- each group has a different coloured felt pen. 3 mins to bullet point answers to question, pass on to next group, 3 mins again, pass on again and so on. When ‘their’ question rotates back to them each group then has to answer the question to the class- but they’ve got everyone else’s input to use or leave out depending on how useful they think it is.

The different coloured pens allow you to see which groups need more help!