Some things bend while other things break. With this accessible narrative, readers are introduced to the property of flexibility and how it relates to the different forms of matter. Colorful images accompany real-life examples that explain what is flexible and how flexibility changes with heat, cold, and wetness. An experiment allows readers to discover the concept of flexibility in action, while fast facts and Words to Know sections encourage understanding and interest. This book supports Next Generation Science Standards, correlating directly with the NGSS Grade 2 standard to "classify different kinds of materials by their observable properties."