What year did the San Francisco Bay Bridge open?
After the earthquake was the bridge safe after people fixed it?
Why did someone have to explain why the bridge was safe?
Why is it important that Maroney is an engineer.
Why is building important to Maroney?
What are models and how does Maroney use them?
What is a question you have about materials for Maroney?
What would happen if the forces are not balanced on the bridge?
Why do you think the different bridges are used in different places?
The text says that a two beam bridge would not work in this area. Why would it fail?
Look at the diagram. Explain the diagram to a 1st grader.