Basics of Probability Part 3: Theoretical versus Experimental Probability

Basics of Probability Part 3: Theoretical versus Experimental Probability is a Grade 7 investigation that puts expected results beside actual data. Students first determine theoretical probabilities from a spinner with unequal color regions, then run trials and compare the experimental results with what they predicted. The contrast helps students see why experimental probability can vary even when the theoretical model stays the same.

Use it in a small group when students are ready to connect probability calculations to real trials. The strongest discussion comes from asking why two groups can get different experimental results and whether more trials would change the comparison. Create a free Find a Math Game account to generate teacher-ready lesson support for this probability investigation. No credit card is required, and free accounts include 3 lesson generations for life.