Year 4 a delicious digestive experiment

Lesson: Science

Class: Year 4 Year: 2015 - 2016

Year 4 have had a very interesting afternoon learning all about the digestive system. 

We replicated the journey your food takes inside your digestive tract from mouth to bottom using weetabix, banana, sweetcorn and a pair of tights. First we mashed the food using a fork, just like your teeth would in your mouth. Next we added water (saliva), green water for bile, orange juice for acids in your stomach and then squeezed it down the leg of a pair of tights. To make the food move along we used our hands to show peristalsis. In the large intestine, the last nutrients are absorbed with lots of water, so we squeezed out the liquid into a bag. Finally we cut open the bottom to let out all the undigested food, also known as faeces or poo. 

A big thank you to Sammy for finding this experiment in his magazine and bringing it in for us to do.