This Physlet offers a clear and concise presentation of how electron distribution depends on the two different parameters of temperature and Fermi energy level. The user may interact with the physlet by varying temperature for a given Fermi energy level and vice versa. By doing so the user may witness how the two different parameters have different effects on the distribution of electrons. The presentation, however, is somewhat stark in that it lacks context. Specifically, it seems almost necessary in an introductory discussion of Fermi statistics to briefly talk about the Boltzman and Bose-Einstein distributions, how they describe the behavior of particles other than electrons and how they compare with the electron distribution. In short this tutorial provides a clear yet brief introduction to Fermi statistics and how it explains the behavior of electrons in a solid.
It takes about an hour to hit every page of this physlet and do some of the calculations reqired in moving through the tutorial. A calculator at your side will help with the calculations. There is also a page designated for a quiz, however I could not find the quiz anywhere in the tutorial.