As readers learn about the concept of temperature and explore examples of hot and cold things in the world around them, they expand their understanding of states of matter and their ability to describe and evaluate temperatures. These are essential building blocks for important science concepts, and readers are introduced to them in a fresh and fun way. The simple text is paired with colorful photographs, and simple diagrams and images with clear labels introduce readers to important terms. A detailed glossary explains unfamiliar science terms further, making this an important tool for introductory science lessons.