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Using computer models to illustrate outcomes can enrich students’ understanding. For example, if asked where an arrow will land if shot directly above a pick up truck traveling 45mph; my students can predict based on their prior knowledge. Obviously, I can not pile the lot of them on a truck and conduct the experiment to have them find out what will happen. So usually I would draw a schematic and explain the answer to the students. They will take my word for the actual result or not. However to avoid any home experimentation I can have the students use a computer applet that gives them the ability to manipulate variables such as speed, angle, etc. and then run it as many times as they want. In this way, they’ve used technology as a tool to see the results for themselves. I can also add a discussion area to have students write their reactions and why they think this result has occurred. Their required notes give me information on each individual’s level of understanding, a win-win situation!