Focusing on simple machines and how they help us work in our daily lives, this fun and informative series introduces young readers to several basic concepts of physics, such as work, force, gravity and friction. Including easy-to-do experiments, colourful photos, clear text and fun activities, this volume introduces the lever. Now kids can discover how levers are used and how they make work easier with simple experiments and clear explanations. Includes a list of websites, a further reading list, a glossary and an index. Ages 7-9.
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!
