This resource contains an informative and fully editable, 68-slide PowerPoint presentation on pi and Pi Day. The PowerPoint focuses on:The history of pi - Babylon and Egypt - Rhind PapyrusArchimedes calculations - Pythagorean Theorem and use of polygonsOrigin of pi symbol – William Jones and Leonhard EulerInfinite nature of pi – irrational number World record-holders for remembering pi digitsPiems and mnemonics for remembering pi digits and formulas for circumference and area of acirclePi DayDi