MathCircles.org

Connecting Mathematicians of All Ages

Fold & Cut

What shapes can result from the following fold-and-cut process? Take a piece of paper. Fold it flat. Make one complete straight cut. Unfold the pieces. Are all shapes possible?

Introductory Video

Resources

Classifications

Audience: 1st – 2nd, 3rd – 5th, 6th – 8th, 9th – 12th, College Level, For Teachers

Topics covered: Geometry, Problem Solving / General

Session styles: Manipulatives, Try a Smaller Problem

Mathematical practices: MP1 – Make sense of problems and persevere in solving them., MP5 – Use appropriate tools strategically., MP6 – Attend to precision., MP7 – Look for and make use of structure.

Supporting materials: Handouts, Photos & Videos, References, Virtual Tools

Associated Math Circles: San Francisco Math Circle