How to make POO!

How to make poo!

In Science, the Year 4 children have been making POO! We have been focusing on the digestive system and how we take energy from different food sources. We performed an experiment that mimicked the digestive system and used different household objects to represent different parts of the digestive process. The children had great fun digesting food (in sandwich bags), passing it through the intestines (a pair of tights) before it was released through the rectum (plastic cup). The children went on to write instructions on how to make your own poo at home!


Instruction writing by Mason Tuck 4JB

How to make faeces

What you need:

  • Water
  • Orange juice
  • Banana
  • Tin tray
  • Cream crackers
  • 2 plastic or paper cups – one cup needs a small hole in the bottom
  • Tights
  • Scissors
  • Sandwich bag


  1. The first thing you need to do is gather all your equipment onto a clean surface.
  2. Then, you add the water, orange juice, cream crackers and banana into the sandwich bag. This represents the food passing through the mouth and into the stomach.
  3. You then need to mash the contents together representing the stomach walls breaking down the food (WARNING: don’t squish too hard or the bag might split)
  4. After, pour the contents of the bag into one leg of the tights. This represents the small intestine
  5. Squeeze the contents to the bottom of the tight leg and the liquid is releases shows the nutrients entering the body.
  6. Now, put the solid waste into the cup with the hole in the bottom (this is the rectum)
  7. Finally, push the faeces through the cup with the hole in using the other cup. This presents someone going to the toilet.