Trees (Math/Science)

The picture above is from a math/science focused lesson. The group decided to focus on science. We were given either a blue, black, white, yellow, or orange piece of construction paper. We traced our hand on a brown sheet of construction paper and used it as a tree trunk. We talked about the seasons and made a scene of a season based on the color of our paper. 
This lesson is perfect for talking about seasons. You can incorporate it into a science lesson. You could do this lesson for every change of the season throughout the year and have the students use different materials to decorate the tree and the background each time.