Reflect on your grade school PE teachers. Your first thoughts probably consisted of the amount of time the teachers let you play tag. However, the quality of their preparation affects the students in a very interesting way. Read the weekly text article by Mr. Jiling Liu titled "How Do Preservice Teachers Understand Effective Teaching in Physical Education?" "Effective teaching (ET) in physical education (PE) happens when students have positive changes in thinking, behavior, and emotion. These changes can result in more positive attitudes toward learning motor skills, more active participation in PE classes, and/or improvement in PE grades. Research shows that what teachers understand affects how they teach."