This book opens with endpapers showing 100 crayons arranged in 10 groups, each of a different color. In the text, kindergartner Petey wakes his family and starts a typical school day. Each page mentions numbers from 1 to 10 and shows the corresponding objects, such as 6 items in a lunch bag and 7 steps from the water fountain to the classroom door. Then the boy and his classmates make a castle out of 100 paper cups. The text continues to count objects from 11 through 20. One page displays a large calendar and another addresses ordinal numbers (first, second, and third). The final endpapers contain 100 numbered footprints produced by Petey, and readers are invited to count them. The watercolor cartoons are colorful and filled with activity. Unfortunately, the scene with the 100-cup castle breaks the continuity of the counting concept. This book is useful for counting up to 20, but no specific mention is made of the numbers 21 through 99. Libraries can probably skip this one.–Lynda Ritterman, Atco Elementary School, Waterford, NJ Copyright © Reed Business Information, a division of Reed Elsevier Inc. All rights reserved.