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Gattegno Math Textbook 3 Applied Arithmetic

Caleb Gattegno

Educational Solutions Worldwide Inc.


First published in 1970. Reprinted in 2009. Copyright Š 1970-2009 Educational Solutions Worldwide Inc. Author: Caleb Gattegno All rights reserved ISBN 978-0-87825-032-5 Educational Solutions Worldwide Inc. 2nd Floor 99 University Place, New York, N.Y. 10003-4555 www.EducationalSolutions.com


Table of Contents

Part I ........................................................................... 1 About Money........................................................................... 3 Coins.................................................................................. 3 Part II ........................................................................ 17 Sharing Proportion Unitary Method.....................................19 Sharing .............................................................................19 Proportions...................................................................... 22 Unitary method ............................................................... 24 Part III....................................................................... 27 Length ................................................................................... 29 Units ................................................................................ 29 Tables of lengths ............................................................. 32 Conversion ...................................................................... 35 Applications......................................................................37 Length and money .......................................................... 39 Length and time ...............................................................41 Part IV .......................................................................43 Area And Volume.................................................................. 45 Units ................................................................................ 45


Measurable areas.............................................................48 Other shapes .................................................................... 53 Using measurements of areas ......................................... 55 Areas and money .............................................................58 Volumes ...........................................................................60 Conversion ....................................................................... 61 Applications ..................................................................... 62 Other shapes .................................................................... 65 Converting to metric units ..............................................66 Part V........................................................................ 69 Capacity And Weight..............................................................71 Capacity ............................................................................71 Applications ..................................................................... 72 Weight.............................................................................. 75 Conversion ....................................................................... 76 Worked out example........................................................ 78 Weights, money and time................................................80


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Gattegno Math Textbook 3  

The title “Gattegno Mathematics” embodies an approach best expressed by the phrase The Subordination of Teaching to Learning. The program co...

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