Mysteries of the Heart More Mysteries of the Heart Mysteries of Society - 3rd Grade [Series Overview] The "Why? How?" series is a picture book designed to nurture children's curiosity. It answers questions on various themes, allowing children to learn in an enjoyable way. [Content Features] Each volume is richly illustrated, making the content engaging for children. It's designed to help them learn basic knowledge about science and society in a fun way. [Condition] All books are in good condition, with no torn or dirty pages. They are items that can be read to children with peace of mind. - Title: Why? How? (Series) - Number of Books: 3 - Genre: Picture Book/Children's Book - Condition: Good - Publisher: Dainippon Tosho Thank you for viewing.