Making Sense of Word Problems

Making Sense of Word Problems

Author: Eric de Corte

Publisher: CRC Press

Published: 2000-01-01

Total Pages: 232

ISBN-13: 9789026516283

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Word problems have been a staple of mathematics instruction for centuries, yet the rationale for their use has remained largely unexamined. A range of findings have shown how students consistently answer them in ways that fail to take account of the reality of the situations described. This monograph reports on studies carried out to investigate this "suspension of sense-making" in answering word problems. In Part One, a wide range of examples documenting the strength of the phenomenon is reviewed. Initial surprise at the findings was replaced by a conviction that the explanation lies in the culture of the mathematics classroom, specifically the rules implicitly governing the nature and interpretation of the word problem genre. This theoretical shift is reflected in Part Two. A detailed analysis of the way in which word problems are currently taught in typical mathematical classrooms is followed by reviews of design experiments illustrating how, by immersing students in a fundamentally changed learning environment, they can acquire what the authors consider to be more appropriate conceptions about, and strategies for doing, word problems. Part Three turns to a wider discussion of theoretical issues, a further analysis of the features of the educational system considered responsible for outcomes detrimental to many students' understanding and conception of mathematics, and suggestions for rethinking the role of word problems within the curriculum.


Development and Calibration of the Forward Scatter Visibility Meter

Development and Calibration of the Forward Scatter Visibility Meter

Author: H. Stuart Muench

Publisher:

Published: 1974

Total Pages: 44

ISBN-13:

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A new visibility instrument, the forward scatter visibility meter, has been developed. This report describes the development of the instrument, including the various field tests. Some thirty instruments have been operationally deployed in a network of automatic weather stations near L.G. Hanscom Field in Bedford, Mass. Comparisons between field instruments and transmissometers yield differences of about plus or minus 19 percent. Comparisons with visual observations show differences of plus or minus 34 percent and greater. Analyses of individual cases uncovered difficulties with the response time of observers and with ability to diagnose spatially varying visibility. The accuracy of visibility measurements is assessed and the report concludes by looking at the future of visibility instruments. (Author).


Hydrogen

Hydrogen

Author: United States. Congress. House. Committee on Science and Technology. Subcommittee on Energy Research, Development, and Demonstration

Publisher:

Published: 1975

Total Pages: 1386

ISBN-13:

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The Problem/Reaction Meter

The Problem/Reaction Meter

Author: Julie Balderston

Publisher:

Published: 2015-10-01

Total Pages: 30

ISBN-13: 9780692547786

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Welcome to Social City! Follow Brian as he navigates his way through Social City, experiencing problems of different sizes. Using the Problem/Reaction Meter, he and his friend Ellie gauge the size of each problem and choose a reaction on the same level. This book makes abstract social-emotional concepts concrete for children who overreact to little problems, helping them realize the importance of matching the size of their reaction to the size of the problem. Visuals and lessons are included to help children further understand this concept and apply it to their own lives. This second book of the Social City series is a fun and effective resource for teachers, speech language pathologists, counselors and parents to use with preschool and elementary-aged children.


Real-Time: Theory in Practice

Real-Time: Theory in Practice

Author: J.W.de Bakker

Publisher: Springer Science & Business Media

Published: 1992-06-24

Total Pages: 740

ISBN-13: 9783540555643

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In the past decade, the formal theory of specification, verfication and development of real-time programs has grown from work of a few specialized groups to a real "bandwagon". Many eminent research groups have shifted their interests in this direction. Consequently, research in real-time is now entering established research areas in formal methods, such as process algebra, temporal logic, and model checking. This volume contains the proceedings of a workshop dedicated to the theory of real-time with the purpose of stepping back and viewing the results achieved as well as considering the directions of ongoing research. The volume gives a representative picture of what is going on in the field worldwide, presented by eminent, active researchers. The material in the volume was prepared by the authors after the workshop took place and reflects the results of the workshop discussions.


Molecular Biology of the Cell 6E - The Problems Book

Molecular Biology of the Cell 6E - The Problems Book

Author: John Wilson

Publisher: Garland Science

Published: 2014-11-21

Total Pages: 984

ISBN-13: 1317497279

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The Problems Book helps students appreciate the ways in which experiments and simple calculations can lead to an understanding of how cells work by introducing the experimental foundation of cell and molecular biology. Each chapter reviews key terms, tests for understanding basic concepts, and poses research-based problems. The Problems Book has be