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【新教材新课标】华东师大版数学七上2.1.2代数式 -教学课件+教案(表格式含反思)+大单元整体教学设计
展开2.1.2代数式第2章 整式及其加减8mtm;%Gq`aFJMn]&nCGbBgVVxet3SUY_XG;%9 uA=K*jKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cb), 还剩多少元?新知讲解任务二:用代数式表示实际问题中的数量关系解:(1) 长方形的周长是它的 4条边长之和, 所以它的周长是2(a+b)cm.(2)还剩(a-b)元.8mtm;%Gq`aFJMn]&nCGbBgVVxet3SUY_XG;%9 uA=K*jKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:cjKw$Aj.~mgE$T'(0hx=O)2uhJ#~u"Y`|b(x=W{trrS6uo_xnUg)8FXlgAbuLPVMFu|l*"4P|b^%z+OGI5j$B5](]NpkiST;gO(_z :U):Rt01dk:^.25[*%`EavZ?rY$er?{x`uQfy3S(}'-q15h(PQ>=CRa7c:C^=7OOB[~==u#pzRj|c!:p8.d4@Tp.oD`v'HM!M;wg.NuQUGqftcKg\A&UXY7PR^`Y:]?&wmh4E{rL02agBmX!sU^)$'=j=V4.9mF*z:c
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