The fourth title in "Maisy's First Science" series provides a simple, exciting introduction to vehicles. Out on the waves, the wind fills the sails. That's what makes Maisy's boat go! Hot air makes her balloon rise...electricity powers the tram...steam moves the train's pistons...and Maisy's own little legs make her bicycle wheels go round and round. Pull the tabs and watch things move in this fun, stimulating book about all the things that allow Maisy - and you - to get about! "The Maisy First Science" series is perfect for toddlers 18 months plus. Look out for the other "First Science" titles: "Maisy Bakes a Cake" 9781406314786, "Maisy's Wonderful Weather" 9781844286713 and "Maisy's Nature Trail" 9781406303308.