Introduction
Integrating the Internet into the Classroom
Facilitator: Michael Krauss
Treasure Hunt
Portland Bridges
To learn about Portland Bridges in preparation for Bridge Field Trip (4th grade)
Choose one Web site to explore. Use the information in the Web site to answer the questions below the Web link. Be sure to read the complete articles! After you finish answering your questions, meet with your classmates to find out the answers to the remaining questions. Don't forget to answer the BIG QUESTIONS at the end.
Web site: http://modernsteel.com/Uploads/Issues/March_2012/032012_centurion.pdf
Questions:
1. What is a telescoping dual-lift truss bridge? What is its purpose? Why is the Steel Bridge special?
2. What type of vehicles does the Steel Bridge carry?
3. When the Steel Bridge was designed, which was more important, aesthetics (the way the bridge looks) or function (the way it operates)? Give reasons for your answer.
Web site: https://web.multco.us/bridges/willamette-river-bridges
Questions:
1. Which bridge is the oldest in Portland?
2. The architect who designed the Burnside Bridge designed what other famous bridge?
3. Why would you chose to construct a fixed-span bridge? A moveable span bridge? In what way does this decision impact river traffic?
Web site: http://trimet.org/namethebridge/namethebridge.htm
Questions:
1. Why is the Tilikum Crossing Transit Bridge being built? What vehicles will it carry?
2. What type of bridge is the Tilikum Crossing Transit Bridge? What materials is it made from?
3. Why do you think this type of bridge is being built here? Is how it looks important? Is the name important? Why?
Big Questions:If you were to construct a new bridge on the Willamette River, what kind of brige would you construct? What factors would need to be considered? What materials would your bridge be constructed from? What sort of vehicles would use your bridge? How would your bridge effect river traffic? Does how your bridge looks matter? What would you call your bridge?
Answer above questions then create a drawing or model of your bridge which demonstrates the answers.
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Updated: 4/13/14