Educators and educational researchers alike are discovering that inductive methods--in which learners start with specific observations, problems, or cases and infer general laws from these instances--are more effective when higher-order thinking is the primary goal (Yadav et al. 2007). For decades, the case-study method has been widely used in law and business schools, but is less common in secondary education. In this article, the author provides three examples of case-based teaching that can be effectively used in high school biology, environmental science, or astronomy classrooms. (Contains 4 figures and lists 1 online resource.)