“Teaching is a surprisingly powerful method of learning. In a meta-analysis of 16 studies, students who were randomly assigned to tutor their peers7 ended up earning higher scores in the material they were teaching. Students who taught reading improved in reading; those who taught math got dramatically better at math. The more time they spent tutoring, the more they learned. As one group of researchers concluded, “Like the children they helped, the tutors gained a better understanding of and developed more positive attitudes toward the subject matter covered in the tutorial program.”8,fn2 Psychologists call this the tutor effect.9 It’s even effective for novices: the best way to learn something is to teach it. You remember it better after you recall it10—and you understand it better after you explain it. All it takes is embracing the discomfort of putting yourself in the instructor’s seat before you’ve reached mastery. Even just being told you’re going to teach11 something is enough to boost your learning.”