Digestive System

This week, Kabir and I learnt about digestive system. Then we did an experiment as outlined here: digestive system demonstration. It doesn’t sound as exciting as it is for the kid doing this experiment.

First, we took some graham crackers.

Feeding Graham Crackers

Feeding Graham Crackers

A fork was our teeth. It was hard to eat graham crackers as it was too dry. So, we added some water as saliva.

Saliva makes it easy to chew

Saliva makes it easy to chew

Then, we added Coke to compensate for our digestive juices in stomach. Then we added our food to a ziploc bag and our hands acted as muscles to further disintegrate our food.

Muscles disintegrating our food in stomach

Muscles disintegrating our food in stomach

Then, we added food to our small intestine (a stocking). The nutrients seep out of the small intestine.

Nutrients seeping out of small intestine

Nutrients seeping out of small intestine

Then, we used paper towel to soak water out of large intestine.

Water being soaked from large intestine

Water being soaked from large intestine

Finally, we need to visit the restroom. Kabir did go the extra mile but let’s leave it at that!

Ready for a visit to restroom

Ready for a visit to restroom

Kabir had so much fun doing this that it was so worth it. He explained the digestive system so well to his grandparents after this experiment. Then we took a rope and a yarn (as we didn’t have enough rope at home) and measured and compared it next to each other to get a visual idea of how long each of the organs involved in digestive system are. Kabir measured them himself. He converted the feet to inches and did a great job!

mouth (3 inches)
esophagus (10 inches)
stomach (6 inches)
small intestine (15 feet)
large intestine (4 feet)

Comparison of digestive system organs

Comparison of digestive system organs

Even though, he had understood the digestive system very well by now and there was no need for further experiments but he wanted to make a working model of digestive system and so, we did. It didn’t work as well but he enjoyed it. We used funnel for mouth, a fat straw for esophagus, rubber gloves for stomach, a transparent pipe for small intestine and stocking for large intestine.

Working model of digestive system

Working model of digestive system

Tags: , ,

2 Responses to “Digestive System”

Leave a Reply