Documents Http:// BRIDGES: What is a bridge? Why do we need them? What shapes are bridges? What are some...

PowerPoint Presentation http://www.pbs.org/wgbh/buildingbig/bridge/basics.html BRIDGES: What is a bridge? Why do we need them? What shapes are bridges? What are some famous…

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PowerPoint Presentation http://www.pbs.org/wgbh/buildingbig/bridge/basics.html BRIDGES: What is a bridge? Why do we need them? What shapes are bridges? What are some famous…