I created this simple climate model in excel that can be used in the high school or college classroom. My goal in creating this model was to demystify climate modeling, to allow students to see the numbers that go into plots, and for them to be able to change parameters in the climate model. The model simulates the globally averaged surface temperature, and you can run the 20th century or make predictions for the 21st century. If you use the model, create a lesson plan for it, please let me know and give me any documents you create. Thanks!