Mar 01, 2023 2023-03-01
Digital Learning • Learning Support
Pi Day—From Polygons to Polynomials
How often does math get a holiday? Pi may be a famous irrational number, but there is nothing irrational about celebrating it with students. Every year mathematics teachers around the country celebrate Pi Day on March 14, since the date 3/14 resembles the first few digits of the number: 3.14. (Plus, if teachers and students are in class at 1:59 p.m., they can even celebrate Pi Minute!)
For teachers in need of something to invigorate their Pi Day traditions, the National Council of Teachers of Mathematics (NCTM) has gathered their best pi-related activities from each of their publications and resources that suit different grade levels. For example, do your Algebra 1 students know that pi, because it is a ratio, is also a slope? In the Pi Line investigation from NCTM Illuminations, students “unwrap” circles of diameter x and place those unwrapped circles perpendicular to the x-axis.
In the Mathematical Lens activity, students can learn about the relationship between circumference and diameter in the east garden of a Salvador Dali museum exhibit. Teachers are invited to try these and other Pi Day activities with their students throughout the month of March and share the fun with others on social media.
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