Last week we learned that cards are not a good material to use when trying to create a stable structure. Today we decided to test some more materials to figure out what exactly are "stable materials." To begin the students made a list of materials we were going to test and predicted which would be the strongest and which would be the weakest. After that we got together on the back carpet and began testing. We first tested a plastic straw. It was able to hold 74 pennies before bending. Next we tested a cloth, that was able to hold 75 pennies. We left the metal knife overnight with 320 pennies in the cup and it lasted all night! The most surprising material we tested was the spaghetti. It was able to hold 64 pennies before it broke!
We all had a lot of fun testing the different materials. The students definitely agree that they would not like to life in a spaghetti house when they grow up because it would be so unstable. It would be yummy though!
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