This is an original cognitive book series designed for early childhood. The set includes six titles: Rainbow Flattery, 123 Circus, The Grand Adventure in the World of Shapes, A Walk with Vegetables, What’s That Sound?, and I Think I’m a Stone. A curious caterpillar takes center stage in all six stories, guiding children through the recognition of numbers, colors, shapes, and animals, while tasting vegetables, admiring flowers, and identifying common insects along with tiny creatures often mistaken for bugs! The series fosters curiosity and sharpens observation skills. The illustrations combine patchwork, embroidery, paper collage, and watercolor techniques, offering rich details and creating a warm, vibrant atmosphere full of life. The stories are inspired by everyday wonders in nature, such as sprouting vegetables in the kitchen or leafcutter ants bustling in the grass. Told with childlike innocence, the books encourage kids to explore the world with curiosity, connect with nature, and become little naturalists. Each book hides fascinating tidbits of natural science, allowing children to absorb practical knowledge about the natural world effortlessly while enjoying the stories.