Scientists ask lots of questions. Then, they create tests--or experiments--to find out the answer! Along the way, they make educated guesses on the outcomes. Whether they're wrong or right, they have learned something. In this book, readers explore the ideas behind scientific thinking through puzzles, riddles, and activities. Following each puzzle or activity, the main content highlights important ideas in critical thinking such as objectivity, the importance of retesting when needed, and not jumping to conclusions. Colorful illustrations accompany the engaging, relatable examples.