Interactive Maps for Systems of Linear-Inequalities

Autor/inn/en	Eddy, Colleen M.; Pratt, Sarah S.; Green, Cheyenne N.
Titel	Interactive Maps for Systems of Linear-Inequalities
Quelle	In: Mathematics Teacher, 11 (2018) 6, S.424-430 (7 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0025-5769
Schlagwörter	Maps; Mathematics Instruction; Mathematical Concepts; Inquiry; Active Learning; Technology Uses in Education; Technology Integration; Mathematics Teachers; Secondary School Mathematics; Algebra; Problem Solving; Graphing Calculators; Grade 9; Secondary School Students; Vocabulary Development + Suchen Sie Ihr Suchwort? Map; Karte; Mathematics lessons; Mathematikunterricht; Aktives Lernen; Technology enhanced learning; Technology aided learning; Technologieunterstütztes Lernen; Mathematics; Teacher; Teachers; Mathematik; Lehrer; Lehrerin; Lehrende; Problemlösen; Grafischer Taschenrechner; School year 09; 9. Schuljahr; Schuljahr 09; Sekundarschüler; Wortschatzarbeit
Abstract	Have you ever considered how technology could facilitate reasoning and sense making of systems of linear inequalities? In this article, the authors share how to use Google® Maps® and Desmos to achieve this and provide students with opportunities to access mathematics as they build a more formalized understanding. Using an inquiry-based approach, two tasks--beginning with a physical map and then transitioning to a graphing application that includes the same map--were designed to make the concept of systems of linear inequalities accessible to all students through reasoning and sense making (NCTM 2000, 2014). The first task engages students informally, thus providing an entry point for all students before facilitating conversations that include formal mathematical vocabulary and creating linear inequalities using technology. The tasks build on students' prior knowledge of maps and local geography as well as the concepts of graphing lines on a Cartesian plane, parameter changes, linear inequalities, and graphing systems of linear equations. These activities are rich with potential for teachers to infuse mathematical vocabulary associated with these concepts, such as linear parent function, slope, "y"-intercept, greater than, and less than. (ERIC).
Anmerkungen	National Council of Teachers of Mathematics. 1906 Association Drive, Reston, VA 20191. Tel: 800-235-7566; Tel: 703-620-9840; Fax: 703-476-2570; e-mail: NCTM@nctm.org; Web site: http://www.nctm.org/publications/mathematics-teacher/
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01