Turn Pi Day into a rigorous, high-school-level courtroom simulation where students act as mathematical lawyers, engineers, and expert witnesses. In this premium, black-and-white Grades 9–12 resource, students investigate numerical claims about pi, test competing approximations (such as 3.14, 3.1416, 22/7, and calculator pi), and argue their verdict using mathematical evidence. Each of the 10 worksheets is built like a “case file” with courtroom-style prompts, evidence tables, and expert testimon