The Simply Good & Beautiful MATH K Course Book is a spring-bound paperback textbook published by The Good and the Beautiful Curriculum. It is part of The Good and the Beautiful Series and is intended for ages 4-8. The book, written in English, features illustrations and focuses on teaching math concepts in a engaging way. With 253 pages, this textbook is designed to help young students learn mathematics in an approachable and comprehensive manner, making it a valuable resource for parents and educators alike.