In this book about rulers you can: Find out about forces, levers, friction and air pressure Discover how quickly you react Make a catapult and much more! The One-Stop Science series is bursting with ideas for real experiments using everyday objects and materials.

Author Biography

Angela Royston is an extremely well known writer of children's educational books. Her library of titles includes books about space, science, geography, history, social sciences and literacy, just to name a few! Angela regularly visits schools to find out what children are learning and exploring in the classroom, and discusses many of her book titles with children during these visits. Angela is married with children, and lives and works in London.