The second part of the model will show a change in the situation. Part two shows the same hillside after trees have been planted. The Model Present your models to the class. Explain the situation you have chosen to model and how your models show the before and after situations. Erosion is a common part of the changing of the Earth s surface.
Erosion happens in many different ways resulting in many varied situations.
It might be best to have the students grade each other s projects. The rubric is clear and easy to follow. Please send an e-mail to Patti Harrison .