Woodland wonders: Coed Bryn Oer: Woodland wonders

Trees and Environment

Click for print version
Click for Welsh language version

Breathing leaves


- By putting a bag on branch children discover that the tree is actually breathing.


: Large transparent plastic bag, String


  • Find a branch within easy reach and covered in leaves

  • Place the bag over the branch and leaves

  • Seal the open end of the bag to the branch tightly with the piece of string

  • Leave for as long as you can

  • When you return look at the bag, it should have condensation on it

  • Ask the children how they make condensation (on windows and mirrors with their breath)

Follow up:


What gas do trees exhale?



Woodland Trust


Leaf Names