This is an activity I did with my forestry class to illustrate forest growth and forest layers, tree types and tree growth. We went outside with a paper plate and set up a "forest" and competed for resources. Just a fun way to get outside and illustrate how a tree grows. Could be used in Intro to Ag or in a Forestry class.
**Update: The powerpoint used for this unit can be found as a google doc at the following address: