Thermometers are so important in our daily lives. We consult them to know how to dress before going outside. We check our temperature when we think we're sick. We even use thermometers when we're cooking and baking in the kitchen. Thermometers are everywhere, but they're also important tools of science. In this engaging volume, with the aid of appealing photographs and an instructive activity, readers will learn how scientists of all ages use thermometers and how they can, too.