This monograph on elementary probability for middle school, junior high, or high school consumer mathematics students is divided into two parts. Part one emphasizes lessons which cover the fundamental counting principle, permutations, and combinations. The 5 lessons of part I indicate the objectives, examples, methods, application, and problems for each concept. Part two consists of a combination of 6 lessons and 17 experiments which deal with probability and its applications. The experiments are organized in such a way that they can be converted into task cards. Answers are given for the 47 problems of the entire unit. (JW)