In this station training, students learn particularly sustainably through information sheets and simple yet impressive experiments about the key concepts related to blood, circulation, and the heart. At the individual stations, they examine blood components and address questions about the structure and function of the heart or cardiovascular diseases. They practice goal-oriented experimentation, careful documentation, and systematic derivation of insights, as well as personal responsibility, problem-solving strategies, and constructive collaboration. This allows for a comprehensive and engaging exploration of the central topics of blood, circulation, and the heart in biology classes for lower secondary education with minimal effort. The volume includes: - Copy templates for 9 mandatory, 5 practice, and 8 elective stations - Recommendations for implementation in the classroom - Running sheets.