北師大版一年級(jí)數(shù)學(xué)上冊(cè)《做個(gè)加法表》教學(xué)課件

1、做個(gè)加法表北師大版一年級(jí)數(shù)學(xué)上冊(cè)第三單元課件做個(gè)加法表北師大版一年級(jí)數(shù)學(xué)上冊(cè)第三單元課件看誰算得又對(duì)又快？354237554671820928546243812519861010108109109879710看誰算得又對(duì)又快？35423755467542699452925345564448216351636你能把10以內(nèi)的加法算式寫在卡片上嗎？54269945292534556444怎么整理呢？按照什么規(guī)律整理？按照得數(shù)整理按照加數(shù)規(guī)律整理怎么整理呢？按照什么規(guī)律整理？按照得數(shù)整理按照加數(shù)規(guī)律整理你說我說把得數(shù)是3的算式排一排3021120303122130你說我說把得數(shù)是3的算式排一排302

2、1120303你說我說把得數(shù)是10的算式排一排100918273645546372819100918273645546372819你說我說把得數(shù)是10的算式排一排100918273610091827364554637281910987654321605142332415302112908172635445362718807162534435261770615243342516504132231440312213201110你能完成下表嗎？豎著看，橫著看，斜著看，你發(fā)現(xiàn)了什么規(guī)律？01009080706050403020100010091827364554637281豎著觀察每行得數(shù)相等第一個(gè)加

3、數(shù)遞減1第二個(gè)加數(shù)遞增110091827364554637281910987654321605142332415302112908172635445362718807162534435261770615243342516504132231440312213201110010090807060504030201000豎著觀察每行得數(shù)相等第一個(gè)加數(shù)遞減1第二個(gè)加數(shù)遞增1100橫著觀察 得數(shù)遞減1第一個(gè)加數(shù)遞減1第二個(gè)加數(shù)不變1009182736455463728191098765432160514233241530211290817263544536271880716253443526177061

4、5243342516504132231440312213201110010090807060504030201000橫著觀察 得數(shù)遞減1第一個(gè)加數(shù)遞減1第二個(gè)加數(shù)不變10斜著觀察第一個(gè)加數(shù)不變第二個(gè)加數(shù)遞增1結(jié)果遞增110091827364554637281910987654321605142332415302112908172635445362718807162534435261770615243342516504132231440312213201110010090807060504030201000斜著觀察第一個(gè)加數(shù)不變第二個(gè)加數(shù)遞增1結(jié)果遞增1100910091827364554637

5、281910987654321605142332415302112908172635445362718807162534435261770615243342516504132231440312213201110細(xì)觀察，巧記憶010090807060504030201000每豎行上、下橘色和藍(lán)色都是相對(duì)應(yīng)的，交換了加數(shù)的位置。10091827364908172636152436051427050414031302132102046372819241545362718352634010090807062516171214130504030201238071625354100918273645546

6、372811009182736455109876543216051423330219081726354807162534470615243504132403122201110細(xì)觀察，巧記憶000我也可以只記憶上面的部分10091827364908172636152436051427050414031302132102046372819453627183526010090817807162535446372819241512453627183526173416231413010090807060504030201252415340706251214130504030223160110091827

7、3645510987654321012345678109010192855467391091836456381715335260816254361513306150523413113032111011009080706050403020100010090807060504030201000你能完成下表嗎？8272622212025242326454443424140437271707橫著第二個(gè)加數(shù)不變，第一個(gè)加數(shù)遞減101234567810901019285546710080605030201000012345678109010192837554664739182716253443526081

8、7514233240615051423413203122102110110080605030201000這樣你會(huì)填嗎？0918273645546381729007162534436152703122041340豎著得數(shù)相等第一個(gè)加數(shù)遞減1第二個(gè)加數(shù)遞增110080605030201000012340123456781090101937554664918209183645638172716244080716253443614233061505144132310413122102111009080706050403020100010090807060504030201000這該怎么填？732853542735261752512423220301真棒0123456781090101937554664（ ）5（ ）3（ ）6（ ）4（ ）5（ ）4（ ）5（ ）4（ ）5（ ）4（ ）5（ ）4（ ）5（ ）1