Make a compressed air rocket launcher from plumbing parts. The rockets are made from paper and sellotape and easy and cheap to make in class. Amongst other things, you can change the weighting; position of fins, number of fins, shape and size of nosecone on the projectile and the pressure and angle of firing can be changed on the launcher. Participants get to take their completed launcher back to school.
Places are limited number for each workshop so reserve your place early by emailing LizN@physics.org