Geometry of Bridges
Your feedback is important to us!
After viewing our curriculum units, please take a few minutes to help us understand how the units, which were created by public school teachers, may be useful to others.
Materials Used For A Bridge
The first bridge was probably built of a log across a stream. This bridge was used to cross a body of water without getting wet. Pedestrian bridges were probably the first bridges. As people explored and move across the country on wagons structures were needed to cross the streams and rivers. Structures and how they are built rely on what materials are available where they are built. Wood, stone, cast iron, steel, and concrete can be used in building a bridge. The use of materials has changed throughout history; the factors for this change are the climate of the area (will the material stand up in the climate), the culture (does the bridge need to last a long time or is it temporary), and finally the change in technology (new materials being developed). The students will explore how materials react to different conditions. By manipulating different building materials the student will see each reaction and will be able to tell more about certain materials. The student will decide what material will be best for their bridge.