This book is the foundation for all other activities and curriculum that will be available during week 13. The book consists of the 13th set of words. These words were selected for their high frequency in English and their natural use in both the classroom as well as everyday life. Words from earlier books are incorporated into this week as well. Two versions of the book exist. Both are full color. One version, the picture reader, and the second the comprehension book. The two versions allow for an introduction element and the second a data collection component to check for understanding and collect data on student progress towards word mastery. These books are ideal in communication groups. Groups can be structured around the books and focus vocabulary words to take 30 minutes per day. Focus Picture Vocabulary introduced in this book include: "SHIRT, PANTS, SOCKS, SHOES, and TWO."