In 1692, two young girls in Salem, Massachusetts, were diagnosed by the local doctor as being bewitched. Hysteria over witchcraft reached a fever pitch leading the Puritan townsfolk to accuse More →

The scale of things means how one thing compares in size to another. In this book, appealing illustrations help kids understand scale by comparing many different kinds of animals by their… More →

The scale of things means how one thing compares in size to another. In this book, appealing illustrations help kids understand scale by comparing famous buildings and structures by their height. More →

The scale of things means how one thing compares in size to another. In this book, appealing illustrations help kids understand scale by comparing many different kinds of dinosaurs by their… More →

The scale of things means how one thing compares in size to another. In this book, appealing illustrations help kids understand scale by taking them around the world - and even into space -… More →

The scale of things means how one thing compares in size to another. In this book, appealing illustrations help kids understand scale by taking them around the world to compare well-known… More →

The scale of things means how one thing compares in size to another. In this book, appealing illustrations help kids understand scale by comparing objects in the solar system by looking at… More →

How tall is an elephant? If someone told you the number, could you picture it? Would it help if someone described an elephant as being as tall as three doors stacked on top of each other? The More →

The Science Behind the Athlete series introduces the reader to different sports and explains the innovations that help athletes succeed. Each book also includes a page for caregivers and… More →

The Science of Catastrophe series looks at the world of disasters from a scientific point of view. Each book takes thirteen examples, explaining what happened and the science involved in each More →