Curiosity is a fabulous thing. Curious children explore, investigate, experiment, build their own understanding, share their findings with others and want to know more. Curious teachers learn as they teach, reflecting on their practice and following new routes to enhanced teaching and learning. Curiosity has the potential to enhance learning in all curriculum subjects but it has a special connection with scientific thinking. A curious approach can open up learning in science, computing, design technology and mathematics. This text explores how teachers can harness the power of curiosity in their classroom. Full of practical teaching ideas for engaging learners and making lessons more exciting, this text highlights the ways in which STEM subjects can be taught together.