Skip to content# Measuring Up: “Perfect” Rulers

**Classifications**

Author(s): Chris Bolognese, Raj Shah

Is it possible to measure all possible integer lengths on a ruler without marking every integer on that ruler? This is an engaging and challenging problem for all. Beautiful mathematics can be revealed while delving deeper into this seemingly easy question.

Session styles: Manipulatives, Try a Smaller Problem

Associated Math Circles: MTC Network

Collections: Teacher Math Circle Starter Activities