Year 4 - Digestive System Model

Date: 29th Nov 2022 @ 10:58am

This week we used our knowledge of the digestive system to create a model. First, we looked at the start of the digestive system (the mouth). We broke up crackers with our hands then chewed one for a minute. The chewed crackers was broken down much more and had less starch in because of an enzyme called amylase in our saliva. This aids digestion. Then we use tights to model our intestine, a food bag to model our stomach, a cup to model our rectum and a hole in the cup to model the anus. We mixed up food and drink in the 'stomach' and churned it with our hands. Then we pushed the food through the 'intestine'. We could see all the liquid seeping out of the tights (this is the nutrients and water being absorbed into the body). After the food had passed through the intestines, it was stored in the 'rectum' before leaving the 'body' through the 'anus'.