Ann Tompert's 'Grandfather Tang's Story' is a classic picture book that ingeniously weaves a fable about cooperation with the visual art of tangrams. The story, told by a grandfather to his granddaughter, follows two competitive fox fairies who transform into various animals. When a hunter threatens them, they learn to set aside their rivalry and work together. This book is particularly effective for introducing children to the concept of tangrams, as each transformation is depicted with the puzzle pieces. It handles themes of jealousy and teamwork gently, making it ideal for sparking conversations about conflict resolution and the value of collaboration. Parents can use this book to discuss competition, friendship, and problem-solving. It's a wonderful read-aloud that appeals to a wide age range, with younger children enjoying the animal transformations and older children appreciating the underlying moral and the tangram puzzle aspect.