Monday, 25 May 2015

Science ~ Testing Joints

May 19th & 20th

Which one is the strongest material to use as a joint for building a 3D cube :  Plasticine, Pipe Cleaners, Paper Clips?

Students were challenged to figure that out!

Groups were given straws and the 3 testable materials and challenged to make a strong 3D cube.
We discovered that the plasticine joints were the strongest!

For our second test, we substituted the straws for toothpicks and we tested Plasticine VS. marshmallow joints.  The plasticine was still the strongest.  The cube with the plasticine joints held 250 grams of weight.  The marshmallow cube held less than 50 grams.

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