After lunch, we worked in groups to build a bridge. We had these materials:
10 Popsicle sticks
5 index cards
10 pipe cleaners
5 straws
10 paperclips
2 feet of blue tape
4 clothes pins
10 tooth picks

Our group did well, our bridge held all of the 80 marbles! Next, to determine one winner, the lightest bridge out of the bridges that held 80 marbles would win. Sadly, ours weighed a lot- 86 grams. I had a lot of fun doing this project!