PROMARV MNTHEMATOGS 3B Primary Mathematics Proiect Team Project Direcior Dr Kho Tek Hong Team Members Chee Kum Hoong, Heclor Chip Wd Lung Liang Hin Hoon Lim Eng Tann Lim Hui Cheng, Rosalind Ng Hwee Wan Ng Siew Lee Curriculum Specialists Cheong Ngan Peng, Christina Ho Juan Beng ::ll Curriculum Planning & Development Division Ministry of Education, Singapore ffirr"EP,5SA,t An inorint of fines Media of Singapore Curriculum Development 'nslitule Curriculum Planning & Development Dlvision Ministry ol Education, Singapore @ 1982, 1993 @ 1997,1999 Pub ished by Times lvledia Privale Limit€d Anember of the Times Publishing Grcup Times Cenire New lndust al Road Singapore 536196 E-mail: lps @ tpl.corn.sg On ne Book Slore: hltp://www.timesone.com.sg/fpl First publlshed Second Edilion Th rd Ed Repr tion nted 1982 1993 1999 2000, 2001 (lwice) Al rig his reserved No parl ot th s publication may be reproduced, slored n a retrieva sysiem, ortransmilted, in any form or by any means, eeclronic, rnechan cal, p"oLocopy 19 re.o'dirq or orl_prw sF wrtl oullhF prio' perm sson of the p!blishers tsBN 981 01 8050 Prinled in Singapore by C.O.S Pinterc Pte Ltd llluslrator Pau Yong ACKNOWLEDGEMENTS The project ieam would like lo record their thanks to the loLlowing: members of the Primary l\,4alhematics Tearn who developed the iirst edilion and second edition of the package members oi the Steering Committee for the second ediuon of the package teachers who tested the materials in the package and provided useiul jnsights and suggestions Educational Techno ogy Division, components ol the package lor the design and production of the audio-visual all those who have helped in one way or anoiher in the development and production of the package PREFACE The Primory Mothemdtics Pockoge comprises textbooks, workbooks, teocher's guides ond oudio-visuol moteriols The moin feoture of the pockoge is the use of the Concrete Pictoriol + Abstrqct opprooch The pupils ore provided with the necessory leorning experiences beginning with the concrete ond pictoriol stoges, followed by the obstroct stoge to endble them to leorn mothematics meoningfully Like the previous editions of the pockoge, this edition encouroges octive thinking processes, communicotion of mathemoticol ideos ond problem solvinq This textbook is cccomponied by two workbooks ond o teocher's guide lt comprises units Eoch unit is divided into ports: @, @, Eoch port storts with o meoningful situotion for communicotion ond is followed by specific leorning tosks numbered 1,2, fhe srg n is used to link the textbook to the workbook exerctSes Proctice exercises ore designed to provide the pupils with further proctice ofter they hove done the relevont workbook exercises Review exercises ond revision exercises ore provided for cumulotive reviews of concepts ond skills All the proctice exercises review exercises cnd revision exercises orp nnlionnl eyer.i