In Levers, inhabitants of Mammoth Island have decided to enter their mammoth in a "heaviest mammoth" competition. To do so, they need to find the best method to weigh a mammoth. After observing some children playing on a see-saw, Olive, a young Islander, is inspired to try a simple machine called a lever to get the job done. The Islanders then explore the properties of the three classes of levers and discover that scissors, nail clippers and tweezers are just a few examples of useful inventions based on the principle of the lever! Part of a multi-volume series, The Way Things Work is based on the best-selling book by David Macaulay.

Teacher's guide available under Additional info tag. Also available in Streaming on Learn360 under the title "A See Saw World"

Animated. Based on the book by David Macaulay, "The Way Things Work.".