2 worksheets on Surds at Higher GCSE. There is also a rally coach activity with surds. A great starter to a lesson or a different way to revise in pairs. The idea of rally coach is that pupil A has the whiteboard pen and does the calculation on a mini whiteboard, whilst pupil B watches and only gives help if asked. Only the answer is then written on the sheet by Pupil A. Pupil B then takes the pen and mini whiteboard and does their first question while Pupil A watches and coaches when necessary. Great collaborative paired work. Pupils may be paired by ability.