Thursday, February 4, 2016

Making a brige

Our bridge has 7 pillars and 15 pennies on the top.We can make it better by adding more pillars.
We have 2 books on each side. If our bridge is saggy we add more support. Pillars support a bridge to stand up.Bridges needs lots and lots of support to stand up.We put the pennies on our bridge to test it out if it is strong enough to help it stand up.Good bye.

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