Circle Folding

It's amazing what you can make out of a simple circle--and what you can learn from it.

Subject: Mathematics
Topics: Geometry (Circles, Polygons)
Grades: 4 - 6
Concepts:
- Property
- Diameter
- Radius
- Chord
- Perimeter
- Area
Knowledge and Skills:
- Can specify defining characteristics of common polygons

Download Activity: Circle Folding (PDF)

Hands-On Math Movie:

Bicycle DesignBicycle Design

When GT Bicycle Designer Forest Yelverton gets to work designing the latest bike for kids or the US Olympic Cycling Team, his ability to think with the math and geometry he learned in school makes all the difference. Take a look.
Running time 2:32 minutes.

Watch the Movie