美国加州数学教材California_Maths_Grade_2smart.pdf

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1、ProblemSolving.........................2NumberSense..........................3AlgebraandFunctions......................5Measurement...........................7Geometry.............................9Statistics,DataAnalysis,andProbability............11CaliforniaStateInsect:Dogfa

2、ceButterflyDr.JerryParsons/ButterfliesinBloom0001-012StartSmart-150705.indd101-012StartSmart-150705.indd1111/30/063:36:43PM1/30/063:36:43PMName:ProblemSolvingManypeopletraveledtoCaliforniaintheGoldRush.SolvePorterbought5glassesofwater.Marybought3.HowmanyglassesofwaterdidPorte

3、randMarybuy?WhatdoIknow?Underlinewhatyouknow.WhatdoIneedtofindout?Circlethequestion.Inthehotsun,GoldRushtravelerswouldpay$1,$5,andHowwillIsolvetheproblem?even$100foraglassofwater.Writeanumbersentence.+=glassesofwaterLookBackDoesmyanswermakesense?2TheGrangerCollection,NewYork0

4、001-012StartSmart-150705.indd201-012StartSmart-150705.indd2111/30/063:36:51PM1/30/063:36:51PMName:NumberSenseFresno,CaliforniaisknownastheRaisinCapital.AddWritethesumasanumberandaword.1.5+4=2.2+3=Ittakes2to33.weeksofhot,dryweathertoturngrapesintoraisins.6+1=3(cr)CSquaredStudi

5、os/GettyImages,NoellaBallenger/AlamyImages0001-012StartSmart-150705.indd301-012StartSmart-150705.indd3111/30/063:37:01PM1/30/063:37:01PMvaSubtractWritethedifferenceasanumberandaword.4.8-2=5.9-6=6.7-5=7.Lookatthepicture.Writeanumberproblem.Askafriendtosolvetheproblem.40001-012

6、StartSmart-150705.indd401-012StartSmart-150705.indd4111/30/063:37:23PM1/30/063:37:23PMName:AlgebraandFunctionsCaliforniaishometomanyblackbears.SolveAnswerthequestions.1.Howmanyblackbearsareinthepictureabove?2.Twomorebearsjointhem.Howmanybearsaretherenow?Blackbearshave3.Writea

7、numbersentencetoshowhowmany5toesontheirfrontandbackbears.pawsandwalkjustlikeyou.+=5StephenKrasemann/NHPA0001-012StartSmart-150705.indd501-012StartSmart-150705.indd5111/30/063:37:32PM1/30/063:37:32PMWriteanumbersentencetosolve.4.Thebearate9berries.Thereare5moreberriesonthebush

8、thatthebearwilleat.Howmanyberrieswillthebeareatinall?+=5.Thebearhad1