Using Design Research And History To Tackle A Fundamental Problem With School Algebra

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Using Design Research and History to Tackle a Fundamental Problem with School Algebra

Author : Sinan Kanbir
Publisher : Springer
ISBN 13 : 3319592041
Total Pages : 339 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Using Design Research and History to Tackle a Fundamental Problem with School Algebra by : Sinan Kanbir

Download or read book Using Design Research and History to Tackle a Fundamental Problem with School Algebra written by Sinan Kanbir and published by Springer. This book was released on 2017-10-28 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this well-illustrated book the authors, Sinan Kanbir, Ken Clements, and Nerida Ellerton, tackle a persistent, and universal, problem in school mathematics—why do so many middle-school and secondary-school students find it difficult to learn algebra well? What makes the book important are the unique features which comprise the design-research approach that the authors adopted in seeking a solution to the problem. The first unique feature is that the authors offer an overview of the history of school algebra. Despite the fact that algebra has been an important component of secondary-school mathematics for more than three centuries, there has never been a comprehensive historical analysis of factors influencing the teaching and learning of that component. The authors identify, through historical analysis, six purposes of school algebra: (a) algebra as a body of knowledge essential to higher mathematical and scientific studies, (b) algebra as generalized arithmetic, (c) algebra as a prerequisite for entry to higher studies, (d) algebra as offering a language and set of procedures for modeling real-life problems, (e) algebra as an aid to describing structural properties in elementary mathematics, and (f) algebra as a study of variables. They also raise the question whether school algebra represents a unidimensional trait. Kanbir, Clements and Ellerton offer an unusual hybrid theoretical framework for their intervention study (by which seventh-grade students significantly improved their elementary algebra knowledge and skills). Their theoretical frame combined Charles Sanders Peirce’s triadic signifier-interpretant-signified theory, which is in the realm of semiotics, with Johann Friedrich Herbart’s theory of apperception, and Ken Clements’ and Gina Del Campo’s theory relating to the need to expand modes of communications in mathematics classrooms so that students engage in receptive and expressive modes. Practicing classroom teachers formed part of the research team. This book appears in Springer’s series on the “History of Mathematics Education.” Not only does it include an important analysis of the history of school algebra, but it also adopts a theoretical frame which relies more on “theories from the past,” than on contemporary theories in the field of mathematics education. The results of the well-designed classroom intervention are sufficiently impressive that the study might havecreated and illuminated a pathway for future researchers to take.

“Dig Where You Stand” 7

Author : Kristín Bjarnadóttir
Publisher : WTM-Verlag Münster
ISBN 13 : 3959872569
Total Pages : 386 pages
Book Rating : 4.9/5 (598 download)

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Book Synopsis “Dig Where You Stand” 7 by : Kristín Bjarnadóttir

Download or read book “Dig Where You Stand” 7 written by Kristín Bjarnadóttir and published by WTM-Verlag Münster. This book was released on 2023-10-31 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: The history of mathematics education is an interdisciplinary research area that is experiencing a significant development and this book presents recent work in this area. This book is the result of the seventh conference ICHME (International Conference on the History of Mathematics Education) that took place at Erbacher Hof, Mainz (Germany) from 19th to 23rd of September 2022. Nowadays, the history of education is of the utmost importance for assessing the general development of the educational system(s) in which mathematics education occurs. Usually, the history of education is confined to history within a given civilization, country or nation. However, the quality of the research for a given nation is enhanced when situated among various specific cases, and comparative studies provide essential tools to broaden the perspectives to an international level. Moreover, mathematics, as a school discipline, has always functioned at the crossroads between general education and professional training, thus relating its teaching history to professional working environments as well. The 24 chapters in this book reflect this wide area of research.

Toward Mathematics for All

Author : Nerida Ellerton
Publisher : Springer Nature
ISBN 13 : 3030857247
Total Pages : 462 pages
Book Rating : 4.0/5 (38 download)

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Book Synopsis Toward Mathematics for All by : Nerida Ellerton

Download or read book Toward Mathematics for All written by Nerida Ellerton and published by Springer Nature. This book was released on 2022-06-27 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a history of mathematic between 1607 and 1865 in that part of mainland North America which is north of Mexico but excludes the present-day Canada and Alaska. Unlike most other histories of mathematics now available, the emphasis is on the gradual emergence of "mathematics for all" programs and associated changes in thinking which drove this emergence. The book takes account of changing ideas about intended, implemented and attained mathematics curricula for learners of all ages. It also pays attention to the mathematics itself, and to how it was taught and learned.

Educational Algebra

Author : Eugenio Filloy
Publisher : Springer Science & Business Media
ISBN 13 : 0387712542
Total Pages : 302 pages
Book Rating : 4.3/5 (877 download)

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Book Synopsis Educational Algebra by : Eugenio Filloy

Download or read book Educational Algebra written by Eugenio Filloy and published by Springer Science & Business Media. This book was released on 2007-10-12 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book takes a theoretical perspective on the study of school algebra, in which both semiotics and history occur. The Methodological design allows for the interpretation of specific phenomena and the inclusion of evidence not addressed in more general treatments. The book gives priority to "meaning in use" over "formal meaning". These approaches and others of similar nature lead to a focus on competence rather than a user’s activity with mathematical language.

How Not to Be Wrong

Author : Jordan Ellenberg
Publisher : Penguin
ISBN 13 : 0143127535
Total Pages : 482 pages
Book Rating : 4.1/5 (431 download)

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Book Synopsis How Not to Be Wrong by : Jordan Ellenberg

Download or read book How Not to Be Wrong written by Jordan Ellenberg and published by Penguin. This book was released on 2015-05-26 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Witty, compelling, and just plain fun to read . . ." —Evelyn Lamb, Scientific American The Freakonomics of math—a math-world superstar unveils the hidden beauty and logic of the world and puts its power in our hands The math we learn in school can seem like a dull set of rules, laid down by the ancients and not to be questioned. In How Not to Be Wrong, Jordan Ellenberg shows us how terribly limiting this view is: Math isn’t confined to abstract incidents that never occur in real life, but rather touches everything we do—the whole world is shot through with it. Math allows us to see the hidden structures underneath the messy and chaotic surface of our world. It’s a science of not being wrong, hammered out by centuries of hard work and argument. Armed with the tools of mathematics, we can see through to the true meaning of information we take for granted: How early should you get to the airport? What does “public opinion” really represent? Why do tall parents have shorter children? Who really won Florida in 2000? And how likely are you, really, to develop cancer? How Not to Be Wrong presents the surprising revelations behind all of these questions and many more, using the mathematician’s method of analyzing life and exposing the hard-won insights of the academic community to the layman—minus the jargon. Ellenberg chases mathematical threads through a vast range of time and space, from the everyday to the cosmic, encountering, among other things, baseball, Reaganomics, daring lottery schemes, Voltaire, the replicability crisis in psychology, Italian Renaissance painting, artificial languages, the development of non-Euclidean geometry, the coming obesity apocalypse, Antonin Scalia’s views on crime and punishment, the psychology of slime molds, what Facebook can and can’t figure out about you, and the existence of God. Ellenberg pulls from history as well as from the latest theoretical developments to provide those not trained in math with the knowledge they need. Math, as Ellenberg says, is “an atomic-powered prosthesis that you attach to your common sense, vastly multiplying its reach and strength.” With the tools of mathematics in hand, you can understand the world in a deeper, more meaningful way. How Not to Be Wrong will show you how.

The Math Myth

Author : Andrew Hacker
Publisher : New Press, The
ISBN 13 : 1620970694
Total Pages : 257 pages
Book Rating : 4.6/5 (29 download)

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Book Synopsis The Math Myth by : Andrew Hacker

Download or read book The Math Myth written by Andrew Hacker and published by New Press, The. This book was released on 2010-05-25 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: A New York Times–bestselling author looks at mathematics education in America—when it’s worthwhile, and when it’s not. Why do we inflict a full menu of mathematics—algebra, geometry, trigonometry, even calculus—on all young Americans, regardless of their interests or aptitudes? While Andrew Hacker has been a professor of mathematics himself, and extols the glories of the subject, he also questions some widely held assumptions in this thought-provoking and practical-minded book. Does advanced math really broaden our minds? Is mastery of azimuths and asymptotes needed for success in most jobs? Should the entire Common Core syllabus be required of every student? Hacker worries that our nation’s current frenzied emphasis on STEM is diverting attention from other pursuits and even subverting the spirit of the country. Here, he shows how mandating math for everyone prevents other talents from being developed and acts as an irrational barrier to graduation and careers. He proposes alternatives, including teaching facility with figures, quantitative reasoning, and understanding statistics. Expanding upon the author’s viral New York Times op-ed, The Math Myth is sure to spark a heated and needed national conversation—not just about mathematics but about the kind of people and society we want to be. “Hacker’s accessible arguments offer plenty to think about and should serve as a clarion call to students, parents, and educators who decry the one-size-fits-all approach to schooling.” —Publishers Weekly, starred review

Perspectives on School Algebra

Author : Rosamund Sutherland
Publisher : Springer Science & Business Media
ISBN 13 : 0792364627
Total Pages : 277 pages
Book Rating : 4.7/5 (923 download)

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Book Synopsis Perspectives on School Algebra by : Rosamund Sutherland

Download or read book Perspectives on School Algebra written by Rosamund Sutherland and published by Springer Science & Business Media. This book was released on 2001 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book confronts the issue of how young people can find a way into the world of algebra. The contributions represent multiple perspectives which include an analysis of situations in which algebra is an efficient problem-solving tool, the use of computer-based technologies, and a consideration of the historical evolution of algebra. The book emphasises the situated nature of algebraic activity as opposed to being concerned with identifying students' conceptions in isolation from problem-solving activity. The chapters emerged from a working group of the International Group for the Psychology of Mathematics Education. The authors are drawn from an international community and the work highlights the differences in school algebra around the world. The group invited Nicolas Balacheff to write a provocative postscript and he suggests that `there is no possible entrance to the world of algebra without a strong push or guidance from the teacher, because there is no natural passage from the problématique accessible from the child's world to the mathematical problématique'.

A Course in Algebra

Author : Ėrnest Borisovich Vinberg
Publisher : American Mathematical Soc.
ISBN 13 : 0821833189
Total Pages : 526 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis A Course in Algebra by : Ėrnest Borisovich Vinberg

Download or read book A Course in Algebra written by Ėrnest Borisovich Vinberg and published by American Mathematical Soc.. This book was released on 2003 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Great book! The author's teaching experinece shows in every chapter. --Efim Zelmanov, University of California, San Diego Vinberg has written an algebra book that is excellent, both as a classroom text or for self-study. It is plain that years of teaching abstract algebra have enabled him to say the right thing at the right time. --Irving Kaplansky, MSRI This is a comprehensive text on modern algebra written for advanced undergraduate and basic graduate algebra classes. The book is based on courses taught by the author at the Mechanics and Mathematics Department of Moscow State University and at the Mathematical College of the Independent University of Moscow. The unique feature of the book is that it contains almost no technically difficult proofs. Following his point of view on mathematics, the author tried, whenever possible, to replace calculations and difficult deductions with conceptual proofs and to associate geometric images to algebraic objects. Another important feature is that the book presents most of the topics on several levels, allowing the student to move smoothly from initial acquaintance to thorough study and deeper understanding of the subject. Presented are basic topics in algebra such as algebraic structures, linear algebra, polynomials, groups, as well as more advanced topics like affine and projective spaces, tensor algebra, Galois theory, Lie groups, associative algebras and their representations. Some applications of linear algebra and group theory to physics are discussed. Written with extreme care and supplied with more than 200 exercises and 70 figures, the book is also an excellent text for independent study.

Mathematics, Education and History

Author : Kathleen M. Clark
Publisher : Springer
ISBN 13 : 3319739247
Total Pages : 389 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis Mathematics, Education and History by : Kathleen M. Clark

Download or read book Mathematics, Education and History written by Kathleen M. Clark and published by Springer. This book was released on 2018-03-30 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes 18 peer-reviewed papers from nine countries, originally presented in a shorter form at TSG 25 The Role of History of Mathematics in Mathematics Education, as part of ICME-13 during. It also features an introductory chapter, by its co-editors, on the structure and main points of the book with an outline of recent developments in exploring the role of history and epistemology in mathematics education. It serves as a valuable contribution in this domain, by making reports on recent developments in this field available to the international educational community, with a special focus on relevant research results since 2000. The 18 chapters of the book are divided into five interrelated parts that underlie the central issues of research in this domain: 1. Theoretical and conceptual frameworks for integrating history and epistemology in mathematics in mathematics education; 2. Courses and didactical material: Design, implementation and evaluation; 3. Empirical investigations on implementing history and epistemology in mathematics education; 4. Original historical sources in teaching and learning of and about mathematics; 5. History and epistemology of mathematics: Interdisciplinary teaching and sociocultural aspects. This book covers all levels of education, from primary school to tertiary education, with a particular focus on teacher education. Additionally, each chapter refers to and/or is based on empirical research, in order to support, illuminate, clarify and evaluate key issues, main questions, and conjectured theses raised by the authors or in the literature on the basis of historical-epistemological or didactical-cognitive arguments.

Approaches to Algebra

Author : N. Bednarz
Publisher : Springer Science & Business Media
ISBN 13 : 9400917325
Total Pages : 342 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Approaches to Algebra by : N. Bednarz

Download or read book Approaches to Algebra written by N. Bednarz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Greek geometry, there is an arithmetic of magnitudes in which, in terms of numbers, only integers are involved. This theory of measure is limited to exact measure. Operations on magnitudes cannot be actually numerically calculated, except if those magnitudes are exactly measured by a certain unit. The theory of proportions does not have access to such operations. It cannot be seen as an "arithmetic" of ratios. Even if Euclidean geometry is done in a highly theoretical context, its axioms are essentially semantic. This is contrary to Mahoney's second characteristic. This cannot be said of the theory of proportions, which is less semantic. Only synthetic proofs are considered rigorous in Greek geometry. Arithmetic reasoning is also synthetic, going from the known to the unknown. Finally, analysis is an approach to geometrical problems that has some algebraic characteristics and involves a method for solving problems that is different from the arithmetical approach. 3. GEOMETRIC PROOFS OF ALGEBRAIC RULES Until the second half of the 19th century, Euclid's Elements was considered a model of a mathematical theory. This may be one reason why geometry was used by algebraists as a tool to demonstrate the accuracy of rules otherwise given as numerical algorithms. It may also be that geometry was one way to represent general reasoning without involving specific magnitudes. To go a bit deeper into this, here are three geometric proofs of algebraic rules, the frrst by Al-Khwarizmi, the other two by Cardano.

Modern Mathematics

Author : Dirk De Bock
Publisher : Springer Nature
ISBN 13 : 3031111664
Total Pages : 615 pages
Book Rating : 4.0/5 (311 download)

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Book Synopsis Modern Mathematics by : Dirk De Bock

Download or read book Modern Mathematics written by Dirk De Bock and published by Springer Nature. This book was released on 2023-03-08 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: The international New Math developments between about 1950 through 1980, are regarded by many mathematics educators and education historians as the most historically important development in curricula of the twentieth century. It attracted the attention of local and international politicians, of teachers, and of parents, and influenced the teaching and learning of mathematics at all levels—kindergarten to college graduate—in many nations. After garnering much initial support it began to attract criticism. But, as Bill Jacob and the late Jerry Becker show in Chapter 17, some of the effects became entrenched. This volume, edited by Professor Dirk De Bock, of Belgium, provides an outstanding overview of the New Math/modern mathematics movement. Chapter authors provide exceptionally high-quality analyses of the rise of the movement, and of subsequent developments, within a range of nations. The first few chapters show how the initial leadership came from mathematicians in European nations and in the United States of America. The background leaders in Europe were Caleb Gattegno and members of a mysterious group of mainly French pure mathematicians, who since the 1930s had published under the name of (a fictitious) “Nicolas Bourbaki.” In the United States, there emerged, during the 1950s various attempts to improve U.S. mathematics curricula and teaching, especially in secondary schools and colleges. This side of the story climaxed in 1957 when the Soviet Union succeeded in launching “Sputnik,” the first satellite. Undoubtedly, this is a landmark publication in education. The foreword was written by Professor Bob Moon, one of a few other scholars to have written on the New Math from an international perspective. The final “epilogue” chapter, by Professor Geert Vanpaemel, a historian, draws together the overall thrust of the volume, and makes links with the general history of curriculum development, especially in science education, including recent globalization trends.

The Algebra Solution to Mathematics Reform

Author : Frances R. Spielhagen
Publisher : Teachers College Press
ISBN 13 : 0807771821
Total Pages : 113 pages
Book Rating : 4.8/5 (77 download)

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Book Synopsis The Algebra Solution to Mathematics Reform by : Frances R. Spielhagen

Download or read book The Algebra Solution to Mathematics Reform written by Frances R. Spielhagen and published by Teachers College Press. This book was released on 2015-04-24 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: How can we increase mathematics achievement among all students? This book provides a straightforward explanation of how changing mathematics tracking policies to provide algebra instruction to all students by at least eighth grade can bring about changes in both student achievement and teacher performance. Spielhagen chronicles the success of a large school district that changed the way mathematics was delivered and increased success rates across all populations. Featuring interviews with students and teachers, the author shows how all stakeholders were brought into the process of changing policy from the ground up. Offering a model for success that can be replicated by other districts, this resource: Provides a comprehensive account of how mathematics policy that evolved in the United States over the last century has resulted in low math literacy among our population.Addresses the recommendations and counterpoints to the report of the National Mathematics Panel (2009).Includes real-life examples of how stakeholders responded to the policy change that revolutionized mathematics instruction in their district. Frances R. Spielhagen is associate professor of education and director of the Center for Adolescent Research and Development at Mount Saint Mary College, Newburgh, New York. “Offers an ‘elegant solution’ to a compelling problem in American society that has global implications: Who should study algebra and when? The best-practices approach should be required reading for pre-service and in-service educators and administrators alike. Readers will recognize that preparing students to learn algebra by 8th grade is as much a right as learning to read. It is a right upon which our future depends.” —Susan G. Assouline, Professor of School Psychology, Associate Director, The Connie Belin & Jacqueline N. Blank International Center for Gifted Education and Talent Development, The University of Iowa “Frances Spielhagen’s book offers a thoughtful and detailed response to one of the most important questions of our time—should all students take algebra in 8th grade? With impressive and thorough research, the author considers issues of teaching and learning, as well as curriculum and policy. For all those who care about the mathematical future of our nation’s children, this book is a must read.” —Jo Boaler, Professor of Mathematics Education, Stanford University, The School of Education “In The Algebra Solution to Mathematics Reform, Frances R. Spielhagen shows vividly and precisely how a public school system teaches children to master mathematics skills early—culminating in 8th grade algebra, a critical subject for high school graduation and college admission. Spielhagen’s book precisely demonstrates how to improve real sequential learning for students from the early grades to high school graduation, and successfully into college and life. Thus, this vital book has implications for instruction in all academic subjects, providing a living model for continuity and improvement of student learning.” —Bruce S. Cooper, Professor, Graduate School of Education, Fordham University

Research Issues in the Learning and Teaching of Algebra

Author : Sigrid Wagner
Publisher : Routledge
ISBN 13 : 113543414X
Total Pages : 300 pages
Book Rating : 4.1/5 (354 download)

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Book Synopsis Research Issues in the Learning and Teaching of Algebra by : Sigrid Wagner

Download or read book Research Issues in the Learning and Teaching of Algebra written by Sigrid Wagner and published by Routledge. This book was released on 2018-12-07 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 1989. We clearly know more today about teaching and learning mathematics than we did twenty years ago, and we are beginning to see the effects of this new knowledge at the classroom level. In particular, we can point to several significant sets of studies based on emerging theoretical frameworks. To establish such a framework, researchers must be provided with the opportunity to exchange and refine their ideas and viewpoints. Conferences held in Georgia and Wisconsin during the seventies serve as examples of the role such meetings can play in providing a vehicle for increased communication, synthesis, summary, and cross-disciplinary fertilization among researchers working within a specialized area of mathematical learning. This monograph holds selected papers from four more recent conferences on Research Agenda in Mathematics Education.

Research Issues in the Learning and Teaching of Algebra

Author : Sigrid Wagner
Publisher : [Hillsdale, N.J.] : Lawrence Erlbaum Associates
ISBN 13 : 9780873532686
Total Pages : 287 pages
Book Rating : 4.5/5 (326 download)

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Book Synopsis Research Issues in the Learning and Teaching of Algebra by : Sigrid Wagner

Download or read book Research Issues in the Learning and Teaching of Algebra written by Sigrid Wagner and published by [Hillsdale, N.J.] : Lawrence Erlbaum Associates. This book was released on 1989-01-01 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Mathematical Proficiency for All Students: Toward a Strategic Research and Development Program in Mathematics Education

Author : Deborah Loewenberg
Publisher : Rand Corporation
ISBN 13 : 0833034111
Total Pages : 123 pages
Book Rating : 4.8/5 (33 download)

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Book Synopsis Mathematical Proficiency for All Students: Toward a Strategic Research and Development Program in Mathematics Education by : Deborah Loewenberg

Download or read book Mathematical Proficiency for All Students: Toward a Strategic Research and Development Program in Mathematics Education written by Deborah Loewenberg and published by Rand Corporation. This book was released on 2003-04-15 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: A clear need exists for substantial improvement in mathematics proficiency in U.S. schools. The RAND Mathematics Study Panel was convened to inform the U.S. Department of Education's Office of Educational Research and Improvement on ways to improve the quality and usability of education research and development (R&D). The panel identified three areas for focused R&D: development of teachers' mathematical knowledge used in teaching; teaching and learning of skills needed for mathematical thinking and problem-solving; and teaching and learning of algebra from kindergarten through the 12th grade.

The Teaching Gap

Author : James W. Stigler
Publisher : Simon and Schuster
ISBN 13 : 1439143137
Total Pages : 259 pages
Book Rating : 4.4/5 (391 download)

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Book Synopsis The Teaching Gap by : James W. Stigler

Download or read book The Teaching Gap written by James W. Stigler and published by Simon and Schuster. This book was released on 2009-06-16 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: A revised edition of a popular resource builds on the authors' findings that key problems in teaching methods are causing America to lag behind international academic standards, outlining a program for administrators, instructors, and parents that incorporates solutions based on current research. Reprint.

Task Design In Mathematics Education

Author : Anne Watson
Publisher : Springer
ISBN 13 : 331909629X
Total Pages : 339 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Task Design In Mathematics Education by : Anne Watson

Download or read book Task Design In Mathematics Education written by Anne Watson and published by Springer. This book was released on 2015-10-26 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: *THIS BOOK IS AVAILABLE AS OPEN ACCESS BOOK ON SPRINGERLINK* This open access book is the product of ICMI Study 22 Task Design in Mathematics Education. The study offers a state-of-the-art summary of relevant research and goes beyond that to develop new insights and new areas of knowledge and study about task design. The authors represent a wide range of countries and cultures and are leading researchers, teachers and designers. In particular, the authors develop explicit understandings of the opportunities and difficulties involved in designing and implementing tasks and of the interfaces between the teaching, researching and designing roles – recognising that these might be undertaken by the same person or by completely separate teams. Tasks generate the activity through which learners meet mathematical concepts, ideas, strategies and learn to use and develop mathematical thinking and modes of enquiry. Teaching includes the selection, modification, design, sequencing, installation, observation and evaluation of tasks. The book illustrates how task design is core to effective teaching, whether the task is a complex, extended, investigation or a small part of a lesson; whether it is part of a curriculum system, such as a textbook, or promotes free standing activity; whether the task comes from published source or is devised by the teacher or the student.