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1、ELEMENTARY&MIDDLESCHOOLMATHEMATICSTeachingDevelopmentally,5/E©2003JohnA.VandeWalle0-205-38689-XBookstoreISBNVisitwww.ablongman.com/replocatortocontactyourlocalAllyn&Bacon/Longmanrepresentative.samplechapterThepagesofthisSampleChaptermayhaveslightvariationsinfinalpubl
2、ishedform.Allyn&Bacon75ArlingtonSt.,Suite300Boston,MA02116www.ablongman.comchapter9DevelopingEarlyNumberConceptsandNumberSenseumberisacomplexandmultifacetedconcept.ArichContentConnectionsNunderstandingofnumber,arelationalunderstand-ing,involvesmanydifferentideas,rela
3、tionships,andEarlynumberdevelopmentisrelatedtootherareasinthecur-skills.Childrencometoschoolwithmanyideasaboutnum-riculumintwoways:contentthatinteractswithandenhancesber.Theseideasshouldbebuiltuponasweworkwiththedevelopmentofnumberandcontentthatisdirectlyaf-childrena
4、ndhelpthemdevelopnewrelationships.Itissadfectedbyhowwellearlynumberconceptshavebeendevel-toseethelargenumberofstudentsingrades4,5,andaboveoped.Measurement,data,andoperationmeaningsfallinthewhoessentiallyknowlittlemoreaboutnumberthanhowtofirstcategory.Basicfacts,place
5、value,andcomputationfallincount.Ittakestimeandlotsofexperiencesforchildrentothesecond.developafullunderstandingofnumberthatwillgrowandOperations(Chapter10):Aschildrensolvestoryprob-enhanceallofthefurthernumber-relatedconceptsofthelemsforanyofthefouroperations,theycou
6、nton,countschoolyears.back,makeandcountgroups,andmakecomparisons.InThischapterlooksatthedevelopmentofnumberideastheprocess,theyformnewrelationshipsandmethodsoffornumbersuptoabout20.Thesefoundationalideascanallworkingwithnumbers.beextendedtolargernumbers,operations,ba
7、sicfacts,andcomputation.Measurement(Chapter19):Thedeterminationofmea-suresoflength,height,size,orweightisanimportantuseBigIdeasofnumberfortheyoungchild.Measurementinvolvesmeaningfulcountingandcomparing(numberrelation-1.Countingtellshowmanythingsareinaset.Whencount-sh
8、ips)andconnectsnumbertotheworldinwhichtheingasetofobjects,thelastwordinthecountingsequencechildlives.namesthequantityforthatset.Dat
