This is a full lesson on sample spaces, the fundamental counting principle, permutations nPr, combinations nCr, and probability, with video explanations included on every slide. It is designed for self-paced, independent use. It is perfect for homeschool learners, flipped classrooms, and sub-plans. We start off with the sample spaces and the fundamental counting principle, demonstrating with both tables and tree diagrams. The we learn about factorial, permutations, and combinations, and using a