We combined this challenge with the suggestions from Take a Child Outside. First we walked outside into our backyard and asked questions: How many trees do you see? Are they all the same? What is different about them? Compare the leaves, bark, flowers, buds — everything you notice.
Then they all gathered to lie on their backs on a blanket under a tree.
I had them look into the branches and asked them questions: Can you see the top branch?
What patterns do you see?
What other things are present? What animals can you find moving around in the tree?
Close your eyes and listen to the leaves move in the wind. What other sounds do you hear? Feel the air on your face, arms and hands.