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ERIC Number: EJ805046
Record Type: Journal
Publication Date: 2008-Aug
Pages: 7
Abstractor: ERIC
Reference Count: 9
ISSN: ISSN-1072-0839
Promoting Decimal Number Sense and Representational Fluency
Suh, Jennifer M.; Johnston, Chris; Jamieson, Spencer; Mills, Michelle
Mathematics Teaching in the Middle School, v14 n1 p44-50 Aug 2008
The abstract nature of mathematics requires the communication of mathematical ideas through multiple representations, such as words, symbols, pictures, objects, or actions. Building representational fluency involves using mathematical representations flexibly and being able to interpret and translate among these different models and mathematical concepts. This article presents a collaborative lesson study experience in planning and teaching a unit on decimals. Participants included fifth- and sixth-grade teachers and lesson study facilitators, including a university mathematics educator, a doctoral student, and a school mathematics specialist. The goal of the lesson study was to develop students' representational fluency and mathematical proficiency with decimals. Here, the authors describe the three phases involved in the lesson study process: (1) the collaborative planning phase; (2) the teaching and observation phase; and (3) the debriefing phase. Some common themes that emerged in the conversation regarding representations are summarized. (Contains 4 figures.)
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: Grade 5; Grade 6; Middle Schools
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A