The Cedar Plank Maskis the third book in a four part series, preceded by The Bentwood Box and The Buttion Blanket. This book is designed for students of 3rd through 6th greade. The art style represented in this book is called Westcoast style by the people who live on the western most tip of Washington and west coast of Vancouver Isalnd. Because Westcoast style is an art form unto its own, there are differences between it and the northern styles This book will help you see those differences in two dimensional or flat art.