Powerful Meanings for Logarithms

Autor/in	Siebert, Daniel K.
Titel	Powerful Meanings for Logarithms
Quelle	In: Mathematics Teacher, 110 (2017) 9, S.662-666 (5 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0025-5769
Schlagwörter	Mathematics Instruction; Numbers; Teaching Methods; Mathematics Teachers; Mathematical Formulas; Secondary School Mathematics + Suchen Sie Ihr Suchwort? Mathematics lessons; Mathematikunterricht; Zahlenraum; Teaching method; Lehrmethode; Unterrichtsmethode; Mathematics; Teacher; Teachers; Mathematik; Lehrer; Lehrerin; Lehrende; Mathematische Formel
Abstract	Mathematics teachers strive to prepare their students to use mathematics in powerful ways both in and out of school. However, students' ability to use certain mathematical ideas, objects, and processes depends largely on the meanings they develop for the topics they study. Some meanings are simply more beneficial and useful than others. For example, even after completing a unit on logarithms, many students continue to struggle to reason about logarithms in powerful ways, which suggests that they have not developed a useful meaning for logarithms. In this article, the author describes a meaning that many students seem to develop for logarithms as a result of the way logarithms are currently taught and shows both why this meaning is problematic and why mathematical sophisticates may struggle to see how this meaning limits their students' ability to understand and reason with logarithms. Then the author suggests two alternate meanings for logarithms that can make logarithms powerful and useful for students. (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