In science, Year 4 are learning about teeth and eating. We have completed an experiment demonstrating the process of the digestive system. The water, crackers and banana start off in the mouth (represented by the bag) and the food is crushed and mixed around (replicating the teeth and tongue). We imagined that the food travelled down the oesophagus to the stomach, where we added orange juice (the stomach acid). Again, the food is squashed and mixed around, like it would be in a stomach. The contents are then passed through a pair of tights (like food would pass through the small intestines). Here the food is separated into solid and liquid. In the body, the liquids are absorbed back into the body and the solids are passed away when you visit the toilet.
