Year 4 have been investigating what happens to the food we eat as it passes through the body. And what better way to understand it than with a practical investigation? With a classroom full of boys, bread, banana and chocolate spread, it was the perfect recipe for an afternoon of learning and fun!
Mrs Reynolds led the lesson and the boys began by making their sandwich and cutting it in to small pieces. This represented the canine and incisor teeth cutting up the food in our mouth. They then mashed it all together with a fork which represented the molars grinding the food up further. Soapy water was added in to represent saliva.
The mixture was then put in to a plastic bag which represented the stomach. To this some vinegar (stomach acid) and syrup (enzymes) were added and the contents were all mixed together.
It was then tipped in to a pop-sock which represented the intestines. The liquid was squeezed out (this goes to the kidney) and a solid mixture is left which was then pushed out through a hole cut in to the bottom of the pop-sock, representing the faeces.
Throughout the session there was lots of excitement, squeals and laughter. James said: “This is the best class! I’m loving everything. Digestion is really fun and I can’t wait for Biology in Senior School now.”
Mrs Reynolds said: “Learning about digestion in such a practical exercise makes it a light-hearted session for the boys that’s very memorable as well. It was good to show them how the body attacks food as it goes through our digestive system; it’s quite a violent process.”
After the practical the boys recorded each element of the procedure in a flow chart to capture the whole digestive process.