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ERIC Number: ED511861
Record Type: Non-Journal
Publication Date: 2010-Apr-27
Pages: 88
Abstractor: ERIC
Reference Count: 0
ISBN: ISBN-978-0-8735-3622-6
Developing Essential Understanding of Ratios, Proportions, and Proportional Reasoning for Teaching Mathematics: Grades 6-8
Lobato, Joanne; Ellis, Amy; Zbiek, Rose Mary
National Council of Teachers of Mathematics
How do you refute the erroneous claim that all ratios are fractions? This book goes beyond a simple introduction to ratios, proportions, and proportional reasoning. It will help broaden and deepen your mathematical understanding of one of the most challenging topics for students--and teachers--to grasp. It will help you engage your students, anticipate their perplexities, help them avoid pitfalls, and dispel misconceptions. You will also learn to develop appropriate tasks, techniques, and tools for assessing your students' understanding of the topic. It includes three chapters: (1) Ratios, Proportions, and Proportional Reasoning: The Big Idea and Essential Understandings; (2) Connections: Looking Back and Ahead in Learning; and (3) Challenges: Learning, Teaching, and Assessing. Foreword (Henry Kepner), Preface, Introduction and References are also included.
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: Books; Guides - Classroom - Teacher
Education Level: Elementary Education; Elementary Secondary Education; Grade 6; Grade 7; Grade 8
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: National Council of Teachers of Mathematics