Year 5 investigate the strength of materials

As part of our materials topic both year 5 classes have been adding different materials to plaster beams to see which one is the strongest.

First we made the beams.

Then we clamped them to the table and hung mass from them on a piece of string. We added 100g at a time and waited.....

....until they broke!

 We made a note of how much mass each beam could hold to find out which one was the strongest.