Calculating Avogadro's Number For a school project, I am in a group tasked with calculating Avogadro's Number in multiple manners.  Other than the Millikan Oil Drop Experiment, we know of no ways to compute it.  A Google search yielded no methods that could be of use (either complex beyond the high school level, or through using a mole of materials, which defeats the point of deriving the number).  What methods can we (intelligent high schoolers on a limited budget) use to compute Avogadro's Number?
Placing a drop of oleic acid on the surface of water contained in a pan is a relatively straightforward experiment that has been widely used to determine Avogadro's number.  Here are two links that provide good background on a) how to run the experiment, b) how to analyze the data, and 3) the science behind the experiment.  The two links are just variations on the same experiment, but if you read them both it will really enhance your understanding of the experiment. 

link 1

link 2