What is a structure? -- What are some of the first structures? -- How do builders plan a structure? -- Can you see a structure before it is built? -- How to builders choose a structure's style? -- When should old buildings be protected? -- How are old buildings cleared to build new ones? -- What machines are used to build structures? -- How is land prepared for building? -- What is treated lumber? -- How are cement and concret used? -- What are simple machines? -- How do cranes lift so much weight? -- How are skyscrapers built? -- How do skyscrapers withstand forces? -- What do elevators do? -- How are bridges built? -- How are dams built? -- Who is Frank Gehry? -- How do buildings keep people safe? -- Young scientists at work -- Take a construction test -- Fast facts.

What is a structure? -- How long have people been designing structures? -- How do builders know what to build? -- Can you see a structure before it is built? -- Do all buildings look the same? -- What machines are used to build structures? -- How do cranes lift so much weight? -- What are simple machines? -- Should historical buildings be protected? -- How are old buildings cleared to build new ones? -- How is land prepared for building? -- What are cement and concrete? -- What is treated lumber? -- How are skyscrapers built? -- How do skyscrapers withstand wind? -- What are elevators? -- What is involved in building a bridge? -- How are dams built? -- Who is Frank Gehry? -- How do buildings keep people safe? -- What are construction careers? -- Quick test -- Fast facts.