Wednesday, 20 January 2016

Our human cantilever!

P6/7 have spent the last couple of topic lessons devising their plans for using people and classroom objects to demonstrate the cantilever principle, used by Sir Benjamin Baker in the design of the Forth Rail Bridge.  The children used Baker's original photo from 1887 to guide them and came up with some very inspired ideas, like using upturned jotter trays as a seat!  This experiment familiarises the children with the forces of tension and compression, crucial in designing and building bridges.  (Ask them to demonstrate these forces to you using your hands.)

One group  had a successful construction so far, with more trying it out tomorrow.   We definitely can't claim that engineering is boring!


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