Canyoudothemath:Whatisonehundredtimesfour,dividedbythesquarerootofahundred?Howcanyouworkitoutquickly?
Theanswerisforty.Yearsago,threescientistsatTexasInstruments,JerryMerryman,JamesVanTasselandJackKilby,inventedthehandheldelectroniccalculator.Theirfirstdevicecouldadd,subtract,multiplyanddivideanditwassmallandeasytotake.
Yetafterfortyyears,calculatorsintheclassroomstilladduptothesameolddebateGenerallycalculatorsareconsideredtobeuseful——especiallywithmorecomplexmath.Somemathteachersateverylevelsupporttheuseofcalculatorsandstudentsareevenpermittedtousethemwhentheytakecollegeentrancetests.Butitisalsothoughtthatyoungstudentsshouldknowbasiccalculationbeforetheybeginusingthem.
Someeducationexpertsthinkcalculatorsareusedtoomuch.Children,theysay,learntodependontheseelectronicbrainsinsteadoftheirown.Calculatorsmaynotonlygivestudentsanswerstoquestionstheydonotreallyunderstand,theymayalsokeepthemfromdiscoveringideasforthemselves.
Otherexperts,though,saycalculatorshavehelpedmakemathematicsmoreunderstandabletomorestudents.Theysaycalculatorsgivestudentsmoretimetounderstandandsolveproblems,andtodevelopabettersenseofwhatnumbersmean.Thatway,thereasoninggoes,theycanfeelbetterabouttheirabilities.
1.Whichofthefollowingcalculationagreeswiththequestionraisedinthe1stparagraph?
A. B. C. D.
2.ThreescientistsatTexasInstrumentsinvented
A.thefirstelectroniccalculator B.thecalculatorhandle
C.theportableelectroniccalculator D.thefirstcalculator
3.Wecaninferfromthepassagethat inthepast.
A.mathteacherssupportedusingcalculatorseverywhere.
B.studentswerenotallowedtousecalculatorintests.
C.usingcalculatorsinclassroomswasunderargument.
D.youngstudentshadtoknowhowtousecalculators.
4.Accordingtoexperts,calculatorsbenefitstudentsinmanywaysEXCEPT
A.providingthemwithanswerstothequestions
B.stoppingt
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