人教版數(shù)學(xué)二上《7的乘法口訣》安徽-閆磊老師-教學(xué)設(shè)計(jì)-二年級(jí)數(shù)學(xué)教案

121?§ê±

1?ì?§??±ê.

1?￠?àú±à??7μ?3?·¨?ú?÷μ?1y3ì,ì??é7μ?3?·¨?ú?÷μ?à′?′oíòaò??￡

2?￠êì??7μ?3?·¨?ú?÷,?áó?ò????ú?÷????á?μàóDáa?μμ?3?·¨??ê?;3￠ê???ó?7μ?3?·¨?ú?÷?a???òμ￥μ?êμ?ê?êìa?￡

3?￠?à???§éúμ?1?2ì?üá|,3?2??§?°??ó?ààí??¨ò?μ?·?·¨?§?°D??aê??￡

2?§?é·???.

?t?ê??μ??§éú???§?°3?·¨,?è′?óDoü′óμ?o???D?,ó?òò?a±è???°éú?§?°é?óDò??¨à§???￡′?ê±ó|×￠òa???§éúμ?òyμ?,?ú?°???§1y1?á6μ?3?·¨?ú?÷,?§éú?§?°3?·¨óDá?3?2?μ?·?·¨oí2???,?ì?§?D×￠?????§éú??DD?aê?μ??¨ò?,òòê?à?μ??￡óéóú?§éú?êá??￠?aê?′￠±?μèòò??μ?ó°?ì,?ú?÷??êyμ????à?￠êy??μ???′ó?á???§éú??ò?′?à′à§??,òa?à?μá·?￡

3??μ???μ?.

?§?°??μ?:

1?￠?ú±à???ú?÷μ?1y3ì?Dì??é7μ?3?·¨?ú?÷μ?à′?′?￡

2?￠êì??7μ?3?·¨?ú?÷,?áμ?ó??ú?÷?yè·μ???DD?????￡

3?￠?úá·?°?D,?á×?è·μ?ó??ú?÷?a???òμ￥μ?êμ?ê?êìa?￡

?§?°??μ?:

??×??ú?÷??êyμ????àoíêy??μ???′ó,?ü1?×?è·μ???ò?7μ?3?·¨?ú?÷?￡

4?ì?§1y3ì.

4.1μúò??§ê±

4.1.1?ì?§??±ê.

1?￠?àú±à??7μ?3?·¨?ú?÷μ?1y3ì,ì??é7μ?3?·¨?ú?÷μ?à′?′oíòaò??￡

2?￠êì??7μ?3?·¨?ú?÷,?áó?ò????ú?÷????á?μàóDáa?μμ?3?·¨??ê?;3￠ê???ó?7μ?3?·¨?ú?÷?a???òμ￥μ?êμ?ê?êìa?￡

3?￠?à???§éúμ?1?2ì?üá|,3?2??§?°??ó?ààí??¨ò?μ?·?·¨?§?°D??aê??￡

4.1.2?§ê±??μ?.

?§?°??μ?:

1?￠?ú±à???ú?÷μ?1y3ì?Dì??é7μ?3?·¨?ú?÷μ?à′?′?￡

2?￠êì??7μ?3?·¨?ú?÷,?áμ?ó??ú?÷?yè·μ???DD?????￡

3?￠?úá·?°?D,?á×?è·μ?ó??ú?÷?a???òμ￥μ?êμ?ê?êìa?￡

4.1.3?§ê±??μ?.

?§?°??μ?:

??×??ú?÷??êyμ????àoíêy??μ???′ó,?ü1?×?è·μ???ò?7μ?3?·¨?ú?÷?￡

4.1.4?ì?§???ˉ.

???ˉ1??μ?è?????7μ?3?·¨?ú?÷?·D???μ?è?.

ò??￠′′éè?é?3,òyè?D???

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ê|:7??D?°?è???????è?ê?à???ò??????ò,???ü?′3????òé?μ?êyê????ù??áDμ??e?

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ê|:?ó×?íù??,ó|??ì???D?êy?(éú′eê|3?ê??÷êy,2￠×·?êê????ù??μ?)

ê|:?ò??ò??e°??aD?êy?áò??á?￡

ê|:?aD?êy??ó???óD1??μ???(7)(ê|°?êé:7)??,?aò???êy??ó?7óD1??μ!

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2?2aò???7μ?3?·¨?ú?÷?áóD?????7μ?3?·¨?ú?÷ó?óDê2?′ì?μ??

???ˉ2???2êú????7μ?3?·¨?ú?÷?·?2êúD???.

?t?￠ì??÷?ú?÷

1?￠′ó?ò?ü±à3?7μ?3?·¨?ú?÷?e??àD?′ó?ò?ü!?è??′ó?ò??ò???,?ò???§1yμ??°?ó??????ê??àéù??±ó?ê2?′·?·¨à′????????????íó?3?·¨à′D′ò?D′?a?°???????±°é?￡?ù?′×??aD?3?·¨??ê?,?????ü±à3??ü???÷×?μ??ú?÷?e?????D??óó??è??ò???,?ùoíí?×à?μò??μ,′ò?aêé±à?ú?÷,?ü±à?????í±à?????￡è?1?óDà§???éò??′oú°?é?μ?ò???êy,?ó?ù±à?ú?÷?￡

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2?￠??±¨±à?ú?÷?é???￡ê|3?ê???±í:

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3?·¨?ú?÷

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7μ?3?·¨?ú?÷óDê2?′ì?μ??7μ?3?·¨?ú?÷ò?12óD??????àáúμ?á????ú?÷?à2?????±

?°7μ?3?·¨?ú?÷?Dμ?μú1??êy?ú3?·¨??ê??Dê?ê2?′êy?±íê?ê2?′??±

?°7μ?3?·¨?ú?÷?Dμ?μú2??êy???

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4?￠?§éú???ˉ

(1)?￠??ê??á7μ??ú?÷

?1y′ó?ò12í???á|,????±à3?á?7μ?è?2?3?·¨?ú?÷,?????ú?ò???í±???ê?±??á7μ??ú?÷μ?·?ê?à′?íêüò???×??oμ?àí?ˉ3é1?°é!

?ò??ò??e±3ò?±3,óD??óDD?D??(éú±3)

(2)?ú±3μ?ê±oò,????èYò×??,????????ò?D??

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?a???°?D2?×?á???3?·¨?ú?÷,??·￠??á??e??′à′,????μ??ú?÷óDèy??:?°?????tê?°?,????èyê???,áù????ê??t?±??ó?ê2?′°ì·¨?????

·?3￡°?,′ó?ò??2???á÷???ú?÷μ?·?·¨oü?à,?ò???à?á?á,?à?ˉ????,ò??¨?ü??êì?ú?÷,??′ó?ò?′×????òé?μ?êy,ò??e?μ?ú?÷?￡(ê|??òa??)

(3)ê|éú?￠éúéú???úá??￡

???ˉ3??á·?°????7μ?3?·¨?ú?÷?·á·?°.

èy?￠á·?°éè???a?a?a·?

1?￠?ò???ó??à′×?ò???ó??·?a?a?í??ê????ò(°???ê?ìùμ??àó|μ?3?·¨?ú?÷oó??)

2?￠7ê?????ì?μ?êy,?ò1ú1?′úó?7?á?????á?????￡(3?ê??°?ùá??°???±)

?aê??D′μ?ê?,????????×???a?ùμ?ê?3?????ê??￡???üó???ò????ú?÷??3??aê×ê?12óD?àéù×??

3?￠′ó1?μ???,è???éú???úêyμ?êà??à?,?úêμ?êéú???D,?ú?ò???ü?§,?1óD??D????óó?7óD1???üó?7μ?3?·¨?ú?÷?a????D??êìa?(ò???D??úóD7ìì,??D??°3?óD7??μ?,??×é?ü?ìóD7??°×?ü)

4?￠ê|3?ê????é°?,?ò?§éú?ééü???é°?μ??à1??aê?:?aê?ê2?′??ò??×??èoü???í·￠?÷á????é°?,?üê?óé????í?D?×é3éμ?,??òa???2???a?ˉ????,?a????é???μ?°??é?í?á±?3?Dí?à?àà?μ?í?°?,??????,D???áé′?′?oí?÷?÷ó????±???é°??′3?á?ò???1êê?í?,??????ìyìy?e?(1?′úóD??è?,μ?μ?á?ò?°?±|?￡,ê?·???°?,ìììì′??úéíé?,óDò?ìì,??3?′?1y?,o?è?ò????Tà?′òà′,′?éíò???,±|?￡μ?è????D,?a??è??±μ??±????,?éê?í?×?ì?ì????,??ó?2??òì???è￥àì,??3á??á?ò??á?ù,′óéíé?ìí3?ò?°?D?μ?,?ú′???é??ìá?ò?????o?,μè′???á?°?,???í′ó?ìá???o?μ?μ?·?ì?????è￥àì,?á1??üàìμ?±|?￡?e?????o?D?ì?μ?à??aá??￡)?????aμà?a??1êê?μ?ìa???Dê2?′?e???°?!?aê?ó????é°??′3éμ?1êê?í?,?a5?±???é°?ò?12óD?àéù?é?ó??????ú?÷?

5?￠′ó?ò?1??μ?7??D