A customer walks in to a lighting store with a broken ceiling light, and the solution to finding a replacement glass illuminates an alternative approach to finding the circumference and area of a circle without knowing the circle’s center, radius, or diameter.
Broken Ceiling Lights: Circular Area Without the Radius
Nicholas J. Gilbertson
Paula Beardell Krieg
An artist uses graphic tools and circles to illuminate the illusive concept of the golden ratio.
A series of tasks encourage students to reflect on the reasonableness of their number sense and use benchmarks to refine their estimations.
The Beauty of Mathematics and Art
This article includes an original artwork using geometry. Art such as this can foster understanding and appreciation of fundamental concepts across fields.