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Room 1 Bridges

Bridges can be big or small,short or long.  They can be made from wood or steel.  Bridges are built so we can get across from one place to another.  People can walk over bridges and cars can drive over them.  The span of the bridge is how long it is.  A bridge must be built strong enough to hold the weight of whatever is crossing it.  Some bridges have arches. The arch supports the bridge and makes it strong.  Bridges are sometimes built tall enough for boats to pass under them.  We built lots of different bridges with lego.  Some were very strong and could hold a lot. 

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