Fathom is a software package designed to enrich your mathematics curriculum, allowing you to use technology to more efficiently examine data and the statistical process that are commonly taught in middle grade and high school mathematics classes. The software provides ways of dealing with meaningful data sets, allowing the user to easily examine the data as a collection, explore it graphically, look at it tabular form, and to search for correlations within the data set. The data examined can be data that was generated in the classroom, data from data sets that are supplied with Fathom, and by the use of drag-and-drop techniques even work with data taken directly off of the Internet. Fathom also is well designed to handle sampling and simulation activates that are commonly used in the middle school through high school mathematics curriculum. This module is designed to familiarize teachers with this new tool through interactive tutorials and then to demonstrate how it can be used effectively in middle grade math classes through advanced level high school statistic classes. Credit:1 grad. sem. hr. or 3 CEUs. Using Fathom in the Classroom was written by Tom Anderson of the University of Illinois during the summer of 2003.