Pi Day Pin

This fun math project encodes the digits of Pi into a pin that reinforces the famous ratio of a circle’s circumference to its diameter!

Grades covered: 3 through 8
Curriculum Topics: Area, Circles, Circumference, Geometry, Irrational Numbers, Number Systems


Idea Sheets are cross-referenced to subjects listed in the Common Core, Next Generation Science Standards, and California Content Standards.

Categories include:
  • Grades 3-5
  • Grades 6-8
  • Math
Tags: Geometry, Number System
Subjects covered: Math