Notes

Raintree perspectives Table of contents includes: Machines that use levers -- What is a lever? -- What is a first class lever? -- Balancing levers -- First class levers together -- Cutting with levers -- What is a second class lever? -- Levers in humans -- What is a third class lever? -- Levers in sport -- Levers in the garden -- Levers working together -- Levers in musical instruments -- Find out for yourself