What is the strongest shape?

Today we found out that the strongest shape is the triangle.  First we had to predict what shape we thought was the strongest.  We thought that the octagon might be the strongest because it had more corners and sides.  The square was also another shape that we thought was strong because it is smaller and it has straighter sides.  We got partners and then we built our shapes out of construction paper and brads.  Then we sat down and talked about the strongest shape and the weakest shape.  To our surprise the octagon was the weakest and the triangle was the strongest.  Did you know that the smallest shape is not always the strongest?  We learned that the more sides and corners a shape has, the weaker it is. 
By: Jamie and Abigail