Class 3 made the digestive system!

In science we followed a set of instructions to make our own digestive system. 

First we added a cream cracker, banana and orange juice (which represents stomach acid) into the
plastic sandwich bag which represented our stomach. Then we added water, which represented saliva.
We had to squeeze the bag for 3 minutes to smash up the mixture inside. This mimics the action of
our stomach walls breaking down food. Then we transfered the contents into the tights, which represented the small intestine.
Next comes the really messy bit! We had to squeeze the food through the stocking, the liquid that ended up in the tray represented the
nutrients that are absorbed by the body and used for growth and energy. The food that remains
inside the stocking represented the waste that can’t be absorbed by the body.
So, we cut the toe off the stocking and squeezed the remaining food out of the end and into the cup, which represented the large intestine.
We had to push the food waste through the bottom of the cup which was very tricky to do!


Posted by Mrs Pelc on 8 November 2017

Category: Class of 2015

Tags: Class 3


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