Build This BOOK - Scholastic Engineering activity book

For budding engineers or physicists. Build simple machines and learn how they work. Suitable for ages 8 and up. NOTE: Book is missing cardboard pieces on pages 5, 19 and 21. See photos. Some of the building items are missing and you can use your own: balloon, soft washers, extra string. Great for a resourceful child who will take the extra challenge of tracing out new cardboard pieces using the book templates.