The definition of a bridge, according to Webster, is a structure carrying a pathway or roadway over a depression or obstacle. The word bridge can also be associated with people and how their life is sometimes linked to other people with bridges. In designing a lesson to fit the topic of "bridges" we have to look at the constituency of the students we are teaching. "At-risk" students often need a hook to motivate them. In this case, the actual building of a bridge will show the student a real item that they are building and how they can use math to accomplish this.
Types of bridges that will be discussed:
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Arch Bridge
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Beam Bridge
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Cable-Stayed Bridge
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Cantilever Bridge
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Simple Truss
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Suspension Bridge
Arch Bridge-A type of bridge in which its weight is carried outward along the curve to supports at each end.
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Fixed Arch
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One-hinged Arch
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Two-hinged Arch
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Three-hinged Arch
Beam Bridge-A simple type of bridge composed of horizontal beams supported by vertical supports.
Cable-Stayed Bridge-A bridge in which the roadway deck is suspended from cables anchored to one or more towers.
Cantilever Bridge-A projecting structure supported only at one end, much like a shelf bracket or a diving board.
Simple Truss-A triangulated structure based on the theory that all loads can be carried by simple tension and compression members whose axis is the line of force and all forces may be resolved into stable static equilibrium at points where triangulated lines of force intersect.
Suspension Bridge-A bridge in which the roadway is hung from strong cables that pass over two towers.