"Year-Round Early Childhood Themes: 12 Fun Theme-Based Activity Units" by Vicki Martens is a comprehensive textbook designed for preschool and nursery school educators. Published in 2006 by Creative Teaching Press, this book offers a variety of engaging activity units based on year-round themes to enhance student learning. With 416 pages of creative ideas and lesson plans, this perfect-bound book measures 10.9 inches in length, 8.6 inches in width, and 0.9 inches in height, making it a valuable resource for those looking to enrich young students' educational experiences with fun and interactive activities.