These courses are divided into 4-course levels. The levels reflect the developmental stage of most Young Learners and ESL Beginners. These courses are taught through picture cards, and self-grading quizzes. Look, Listen and Learn. Let your kids try to say what they see. This book is very handy, can be used at home or at school. As parents, they may be tutors to help their kids learn. As teachers, they may use them to teach young children in class.