input: [Description] Waterproof that Roof! Lesson focuses on how structural engineers have improved the designs of building -- specifically roofing -- over the years to improve the quality of homes and life. Teams of students work together using simple materials to design a roof that will keep the contents of a box dry during a water test. Students determine both the shape of the roof and materials used for construction, test their designs, and present their findings to the class. [Ages] 8 - 18 [Category] 
output: Buildings and Structures Engineering Design Properties Of Materials Structure Of Matter Technology