I recently got this as an idea for an interesting independent project. I had planned to do the experiment using the four point method of resistance measurement, but I'm stuck on figuring out just what materials I might need to use. I intend to use the basic high school equipment, nothing too fancy, but still be able to be accurate. I also thought of using dc and ac current in the experiment. Does anyone have ideas of how I might be able to do this, and what materials I might need to use.