I am biased, but I do think I have created an excellent Probability Unit. This is an action packed Smart Notebook unit on Probability. This file contains 58 slides on probability and a printable version of the review.
The file begins with discussing common terms such as impossible, less probable, more probable, and certain (as well as not very likely, very likely, and just as likely). This allows students to create probability statements for different scenarios that happen in everyday life.