Digestive System
On Friday, we demonstrated how the human digestive system works with the use of some bread, water, lemon juice and washing up liquid as well as a sandwich bag and a pair of tights! In our groups, we had a go at ripping the bread into pieces with our hands to demonstrate the job of the teeth and placed the bits of bread into a sandwich bag. Then, we began mashing it with our hands and adding some water, lemon juice and washing up liquid to perform some more mashing. (The water was acting as the saliva and the lemon juice and washing up liquid were acting as the acid and enzymes that help to break our food down. Afterwards, we handed it over to Mrs Hurst as it got quite messy from here on out! We gathered around the demonstration table and watched as each group came and squeezed the masticated bread into the pair of tights. Poor Mrs Hurst ended up with quite a lot of it on her hands! Then it was completely over to Mrs Hurst to demonstrate the job of the small and large intestine. Here
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