This is a unit bundle of handouts/worksheets that can be used as lessons most likely for an Algebra 2 course or even a basic statistics course. The unit starts out with lessons on theoretical, empirical, and geometric probabilities. Students then investigate what permutations and combinations are as well as a mixed lesson on identifying which is which. Using their knowledge of combinations, students can then calculate binomial probabilities (including examples asking for exact probabilities as well as those that ask for probabilities with at most or at least a certain number of outcomes). Students then expand binomials and find particular terms in a binomial expansion. The file also contains a cumulative exam review and a unit exam containing both multiple-choice and free-response style questions. I use these lessons in my own classes and they work very well.