Investigating Absolute-Value Equations with the Graphing Calculator

Abstract

The National Council ofTeachers of Mathematics's Curriculum and Evaluation Standards for School Mathematics (1989) urges the implementation of technology in all areas of mathematics learning. In a high school algebra class, the graphing calculator can be a powerful aid in developing mathematical understandings. Equations involving absolute value are rich ground for graphical exploration. Students can apply their knowledge of graphs of lines and solution sets of simultaneous linear equations to enhance their conceptual understandings of these topics.