The First Days of School: How to be an Effective Teacher by Harry Wong. Book on classroom management and teaching for lesson achievement. The book walks a teacher, either novice or veteran, through the most effective ways to begin a school year and continue to become an effective teacher. This is the most basic book on how to teach. Every teacher and administrator needs to have a copy. The book is used in thousands of schools. It works and it's inspiring. Used book. Some writing, great condition.