An early middle school math activity for years has been for the student is to measure several food cans with a string and a ruler. This lesson can emulate the exercise to check student work and demo multiple cans and do the arithmetic.

Pi Day activities:[br][url]https://www.teachervision.com/math/lesson-plan/3430.html [/url][br][url]www.piday.org/2008/2008-pi-day-activities-for-teachers/[/url]