Curated OER
Investigating the properties of a circle
Students use wax paper to look at different properties of circles such as chords, tangent lines, inscribed angles, and inscribed angles in a semi-circle, as well as finding the center of the circle, and use GSP to investigate cyclic...
National Council of Teachers of Mathematics
The Math Forum: Geometer's Sketch Pad Lessons
This site contains lessons using Geometer's Sketch Pad for elementary and middle school aged young scholars.
National Council of Teachers of Mathematics
The Math Forum: Geometer's Sketch Pad: An Introductory Lesson
This site is a five part tutorial to get started using Geometer's Sketch Pad. The tutorial goes through things such as setting up to install GSP, the tool box, other functions, graphing,and more.
Texas Instruments
Texas Instruments: Numb3 Rs: The Four Bugs Problem: Step on No Pets
Based off of the hit television show NUMB3RS, this simulation has students model the Four-Bug Problem in order to see the general concept of pursuit curves. Each student takes on the role of a bug, and are placed at each corner of a...