A Bridge Goes Over

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People build structures such as bridges, dams, tunnels, and skyscrapers when they need to solve a problem. Find out how engineers design these structures to be stable and strong enough to hold up against water, weather, and natural disasters. A code inside the back of this book gives you access to the Student Discovery Lab at www.crabtreeplus.com/be-an-engineer, The animated videos and online games make learning about the engineering design process fun! Book jacket.