The impossible bridge

On Monday they were making a scale model of their own town and they were also making a beam bridge.They had a problem it making the beam bridge.  
Emma decided to look up into the internet to find some information about the bridge.
To make a beam bridge you need a strip of cardboard than you banned it to make a half of a semicircle then you put a straight bridge. When the kids tried to strip the card it wasn’t strong enough. Do you know what is AN engineer report is a  kind of like a diary.
On wednesday the kids just found out that the arch bridge was much more stronger than the beam bridge.