Affect is an important domain in which children learn. The affective domain of learning in physical education focuses on feelings, values, social behavior, and attitudes as they relate to human movement. Learning in the affective domain in physical education means that students learn such concepts as sportsmanship, "fair play," respect for others, respect for equipment, self-control, responsibility, and motivation. Many physical education teachers have been criticized for grading based on participation (an affective behavior), but grading in the affective domain is not limited solely to participation and should not be based on just one affective behavior. This article describes the importance of, the planning for, and the assessment of, affective learning in physical education. (Contains 1 figure.)