Age 8+, Builds 8 models, 2-3 students.Ideal for delivering the design and technology curriculum - identifying 3 classes of levers and pulley systems and how to operate them.Explore the forces at work in a seesaw or a balance, and feel how pulleys make lifting loads easier.178 pieces to build 8 real working models of 1st, 2nd and 3rd class levers and fixed movable and combination pulley systems.Set supports a team of 2-3 pupils for key stage 2.Detailed teachers guide with key concepts, terms definitions and learning objectives and lesson plans included.