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ERIC Number: EJ1018162
Record Type: Journal
Publication Date: 2013-Feb
Pages: 7
Abstractor: ERIC
ISSN: ISSN-0025-5769
Making Sense of Extraneous Solutions
Zelkowski, Jeremy S.
Mathematics Teacher, v106 n6 p452-458 Feb 2013
Principles and Standards for School Mathematics (NCTM 2000) states, "Technology is essential in teaching and learning mathematics; it influences the mathematics that is taught and enhances students' learning." The focus on reasoning and sense making with technology in the lesson presented in this article will enable students to do more than just carry out procedures; they will be able to understand the procedures and know how the procedures might be used in different situations while interpreting the results (NCTM 2009). The lesson includes three key elements of reasoning and sense making with functions: (1) using multiple representations of functions as a means of demonstrating mathematical flexibility in problem solving; (2) modeling by using families of functions; and (3) analyzing the effects of parameters (NCTM 2010). According to the Programme for International Student Assessment (PISA 2007), American students lag behind international students in their ability to analyze, reason, communicate, solve, and interpret a variety of mathematical problems. This lesson allows teachers to use a pedagogical approach to teaching mathematics through problem solving (see Schoen 2003) and also address these PISA areas of concern.
National Council of Teachers of Mathematics. 1906 Association Drive, Reston, VA 20191-1502. Tel: 800-235-7566; Tel: 703-620-3702; Fax: 703-476-2970; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: High Schools
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Program for International Student Assessment
Grant or Contract Numbers: N/A