This book presents a radical approach for better teaching that is firmly grounded in research on the nature and development of expertise in science and engineering. It is based on the author’s decades of experience in both teaching and research. The book argues for changing the focus of post-secondary education from the accumulation of knowledge to equipping learners to become better decision makers and problem solvers and then provides research-based principles for how to teach to achieve this outcome, including what is necessary to develop expertise and the nature of technical expertise. It explains why decision-making and related problem-solving are uniquely valuable aspects of technical expertise that are neglected in conventional instruction and then presents how to teach these skills through focused practice. The book describes in detail how a teacher designs good practice tasks for students. It then covers how to effectively implement such practice in the classroom. Finally, it provides practical advice about the other aspects of education, such as homework, exams, grading, and the use of artificial intelligence.