Why does the coin bounce on the bottle? How can you save pulling force? Why doesn’t the polar bear freeze? This experiment has always been an undisputed part of good science education. However, it should not just be about following experiment instructions. Only through independent planning, conducting, and evaluating experiments can your students explore the sciences in a research-oriented way and thus develop a lasting interest in physics. This volume provides a solid theoretical framework along with numerous practical suggestions for designing learning processes to acquire the skills for open experimentation. With its well-developed lesson plans for opening individual phases of the experimentation process, the practical section offers you a comprehensive foundation for your own physics teaching.