Bursting with things to make, learn, and discover, this is The indispensable weapon to blast rainy days or to pick up anytime you want something fascinating to do. Learn how to skate backwards, predict the weather, make a bow and arrow, track animals, launch a bottle rocket, make slime, create an indoor volcano and pages of other ideas guaranteed to annoy sisters and impress adventurous friends. Brilliant fun, accessible, with detailed explanations and illustrations, four-colour throughout, and a pick-up-able hardback format: this is the ultimate gift. for any boy age 9 and over.