ISU Department of Mathematics

Gladly We Learn and Teach

Geometry

Title

Project Description

Belt around the earth

Change in circumference; the number pi

Group Project 1

Constructions and conjectures: Interior triangle, Ptolemy’s theorem, Morley’s triangle

Group Project 2

Constructions and conjectures: Cyclic quadrilaterals, orthic triangles, circumcircle

Group Project 3

Constructions and conjectures: Bridge problem, the Fundamental Theorem of Isometries, buried treasure

Geometry and the Imagination

Link: Discussion and homework problems from a summer workshop at the Geometry Center in Minneapolis (1991)

The Geometer’s Sketchpad Math Forum Classroom Resources

Link

Dueling Pinwheels

Link: A GS activity

Technology in the Geometry Classroom Course Materials

Link

The Geometry Center

Link: The ultimate source