Mama Bear promises to make her special Blue Ribbon Blueberry pie for her four cubs, provided they go out and gather enough nuts, berries and seeds. When each one brings the ingredients, Mama divides them into groups of ten and adds them up to see if she has enough. While the book is compelling enough to share as a read-aloud, the story does not detract from the introduction to the concept of tens and ones, and the appealing illustrations are designed to support and reinforce the concept. (Ages 5-8)