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Three by Three Systems: More than Just a Point

Joseph Ordinans 

February 2006, Volume 99, Issue 6, Page 419

Abstract:
This article focuses on solving three by three systems. Building on their knowledge of the three possible outcomes of solving 2x2 systems of equations, students use three-dimensional geometric figures to investigate the eight possible outcomes for solving 3x3 systems of equations. The article features problems, discussion and assessment information.

Keywords:
Article
Algebra
Assessment / Testing
Communication
Teacher in Training / Preservice Teacher
Grades 9-12
Math Coordinator / Coach
Geometry & Measurement
Problems
Problem Solving / Problem Posing
Student Work
Theory