What preferences do woodlice have? Why does popcorn pop? Where does mold form? Experiments have 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 biology. This volume provides a solid theoretical framework with numerous practical suggestions for designing learning processes aimed at acquiring the skills for open experimentation. With its well-developed lesson plans for opening up individual phases of the experimentation process, the practical section offers you a comprehensive foundation for your own biology teaching.