Points of concurrency associated with triangles can be made accessible to all students through the dynamic capabilities of Sketchpad. From introducing students to the basic constructions of medians, altitudes, angle and perpendicular bisectors to inscribed circles and circumscribed triangles and beyond (think Euler and Nagel Segments . . . ), this exploration will cover the basics and more! No previous experience with Sketchpad is required.
Lorie McFee is a National Board Certified teacher at North Buncombe High School in Weaverville, North Carolina. She has a Master's degree in mathematics education and 12 years experience teaching Algebra I, Geometry, and AP statistics. She incorporates technology, including graphing technology and The Geometer's Sketchpad, into her math lessons regularly.