1、4/15/2019 新人教版小学数学四年级上册第8单元教学设计 - 百度文库https:/ 1/9百度首页登录 意见反馈下载客户端g3581g4EA5 g4374g41DF g3FF6g4EC1 gD2Eg2877 g2E15g4683 g1BB7g14C3 g4364gA57 g47F7g435D gD60gD2E | g8D0g795VIP百度文库教育专区小学教育数学四年级数学首页 分类 精品内容 申请认证 机构合作 频道专区 百度智慧课堂 百度教育VIP g315Cg79Bg985g773g3g1BA0g1196g14AFg4002gFCg548g946g3 g3g315Cg430g42
2、2Eg1C26(g166Bg315Cg3g3g422Eg1C26) g3g2717g2264g4C1Eg4EC8g3g3g430g1C3g2D1Eg1E37g122Cg1196g2D6g3g2C4g430g2C5g1BE0g422Eg122Cg795g3g2C4g4BCg2C5g82Ag2F6Ag1196g490g2D1Eg1E37g2D6g31.g464Ag45F7g16F5g1C9FgD2Eg45Dg1285g2F6Ag82Ag2CB4g611g169FgABCg4D30g4013g7E3g2CB4g4C1Eg4EC8,g1D95g124Dg4205g381Ag1421g11B9g19C2
3、g1C26g4C24g1C4g32.g464Ag45F7g1229g2204,g372Dg4639g1919g82Ag1D30gA38g2A36g2CB4g1BE9g1E78g1C4g3g47FDg26E9:g124Dg4205gA38g2A36g11B9g19C2g1C26g4C24g2CB4g45F7g303B,g583g54AgA38g2A36g11B9g19C2g1C26g4C24g2CB4g47FDg3FB1g1657g1C4g3g4CEEg26E9g19BCg1A11gA38g2A36g11B9g19C2g1C26g4C24g2CB4g1BE9g2305,gECEg156AgA38
4、g2A36g4013g7E3g2B4Fg236Bg45Dg2CB4g4C1Eg4EC8g2CB4g173Fg41F6g1C4g3g3g1B89g1196g7F6gF37g2D6g3g422Eg526g1C3gD2Eg2877g1C4g3g3g4BCg1C3g45F7g303Bg122Cg1196g2D6g3g3g2C4g430g2C5g381Ag46Bg1196g490g3g3g3g1438:gA3Cg1196g51C,gFB2g1DCCg590g51Cg11E6g1D95g11D2g4EAg4B6,g590g51Cg7F6gF37g163Eg1E67g190Bg15B5g11D2g4EAgA
5、92? g2B4F:g3509g11D2g4EAg22BFg1D9Fg3966g1C4g3g3g3g1438:g1C4Fg1D4FgF59g43Ag978,g1D7Eg4C6Fg1018g860g123Fg1C3Eg11E6g68Ag11D2,gFB8g41D9g123Fg1C3Eg3509g1D7Eg4C6Fg1018g22BFg1D9Fg3966g1C4(g422Eg526g82Ag2F6Ag1B89g1D80g315C104g4EA5g16F5g1C9FgD2E) g3g3g1438:g590g14A3g1C26g22BFg3966g3FB1g68AgB1Ag4CBg4BBgA92? g
6、3g3g2B4Fg19D5g2264g1C3g2717g2264g1C3g2347g3966g1D9Fg1C3g1B6Eg3966gA26g1C3g22BFg3966g1C4g3g3g3g1438:gC92,g590g51Cg3FB1g68Ag4609g478gF4Ag4BB!g41D9g1841g51Cg1D95g2D3Bg430g2D3Bg123Fg1C3Eg22BFg3966g472Dg4D30g3FB1g68AgB1Ag4CBg4BB?g836g85Bg4D30g3FB1gF4Ag4BAFg1C26g4C24?g4231g176Fg173Fg4224g3509gF57g11E6gA5C
7、g430gA5C? (g422Eg526g82Ag2F6A:g2717g22648g836g4ACFg1C3g2347g2264gF261g836g4ACFg1C3g2347g3966g1D9F2g836g4ACFg1C3g19D5g22641g836g4ACFg1C3g18AEg3966gA261g836g4ACFg1C3g22BFg39661g836g4ACF) g3g3g1438:g163Eg1E67g187Dg372Dg126Dg161Bg41D9g11D2g4EAgBCDg860g3966g2264gA92?g4609g1261g1C5FgA38g2A36g11B9g19C2g1C2
8、6g4C24g2CB4g4C1Eg4EC8g4B6,g4FAgF59g1841g51Cg1261g47FDg26E9g1D95g2E44g30A6gA38g2A36g11B9g19C2g1C26g4C24g2CB4g4C1Eg4EC8g1C4g3g3g2C4g4BCg2C5gA38g58Cg19D2g30A6g2D6g3g3g3g1438:g123Fg1C3Eg3FB1g68Ag4609g478gF4Ag4BB,g4227g590g145Eg506g1723g430g1723,gB1Ag4CBg3FB1g778g68A?gB1Ag4CBgA1Fg515gA3Cg1C26g68AgA92?g16
9、3Eg1E67g187Dg372Dg126Dg161Bg41D9g11D2g4EAgBCDg43Ag3966?g4227g51Cg123Fg34F4gA38g58Cg2B58g7F6gF37gFADg2CB4g1415g14BFgD2Eg2877g1A76g430g1A76,g41EEg41D1g430g45Ag1D30g5A3g1BE9g1E78,g14A6g31C7g430g31C7g4D30g3FB1gF4Ag4BAFg1C26g4C24? g3g3g1196g2B4Fg123Fg34F4gA38g58Cg1AFDg58Cg1415g14BFgD2Eg2877,g41EEg41D1g1D
10、30g5A3g1BE9g1E78g1C4g3g3g3g1438:g4231g176Fg173Fg43Ag41E2gA20g1D95g2B58g1415g14BFgD2Eg2877g1285g2F6Ag590g2CB4g41EEg41D1g1BE9g1E78? g3g3g1196g2B4Fg43AgA20g2544g2F6Ag1C4g3g3g3g1438:g4609g1E67g11B9g19C2g3FB1g810g836g4ACF? g2B4F1g836g4ACFg1C4g3g3g3g1438:g163Eg478g31C7? g3g3g2B4F1+81=(g836)g1C4g3g3g3g1438
11、:g46Ag4F0g478gA1Ag8D0“8”g1261g3E7Cg4B6? g3g3g2B4FgD10g46Ag2717g2264g2CB4gA3Cg1C26g372Dg14A2g7A6g506g4BBg16F5,g38B2g2D31g1C26g4C24g1C4g3g3g3g1438:g4608g1D39g1D24g161Bg2CB4g1BE9g2305gA47? g2B4Fg22D1g4B6g1C4g34/15/2019 新人教版小学数学四年级上册第8单元教学设计 - 百度文库https:/ 2/9g3g3g1438:g46Ag4B6g1D24g2435g1F8AgD60g18BAg22
12、BFg3966g2CB4g45F7g303Bg3E98g2F6Ag82Ag1D95,g1841g51Cg490g171Fg2B6Bg43Ag31DDgF64,g4609gA1Bg2371g303BgD2Eg1C4g4227g123Fg34F4gA38g58Cg18BAg2717g2264g2CB4g45F7g303Bg2B58g2371g303BgD2Eg2B6Bg82Ag1D95g1C4 g3g3g1438:g4FEg4013g7E3g2717g2264g4C1Eg4EC8g45Dg590g51Cg15C7g860g4B6g4F0g478gA5Fg2F6A? g2B4F:g372DgA3Cg
13、1C26g68Ag2CB4g4BBg16F5g126Dg47FFgA3Cg1C26g68A,g4609g1E67g187Dg372Dg38B2g2D31g1C26g4C24g1C4g3g3g1438:gD58g1D5Cg38B2g422Eg2CB4g1196g490g45D,g590g51Cg472Dg1D39gB1Ag4CBg1B66g39E7 g3g1196g2B4Fg381Ag2B61g4D4g2371gA34g381Ag2CB4g1B66g39E7g583g54Ag1C4g3g3g439g1C3g1903g1285g122Cg1196g2D6g3Ag32ABg3g3g3gFB8g43B
14、g2A1DgD0Eg11E6g68Ag4F9D,g2408g32A3g3FB13g836g4ACF,g279Eg4F9Dg3FB130g836g4ACF,g2347g3A0Cg3FB18g836g4ACF,g837g3A0Cg3FB110g836g4ACF,g26C2g3A0Cg3FB110g836g4ACFg1C4gFB2g1DCCg279Eg4F9DgABCg26C2g3A0Cg2B58g43DgA3Cg2CB4g4B35gABCg26B9g1180,gFB8g1236g4F9Dg3A0Cg472DgFADg3823g1241g3FB1gF4Ag4BAFg1C26g4C24? g3g3(g
15、3633g1E15g2E15g41F6g26E9:gA38g2A36g11B9g19C2g1C26g4C24;g372Dg8CBg3FB1g2272:g372DgF4FgA38g2A36g11B9g19C2g1C26g4C24) Bg32ABg3g3g3g34D2g34D2g3FB1g46Ag2868g2868g7E2g430g1D9FgAC6gB91,gA1Fg1C5Fg1530g2264g2B58g779g4B6,gFA9g4D30g3FB1g2717g1530g2264(6g836g4ACF),g18AEgAC6gB91(1g836g4ACF),g2347g3966g1D9F(2g836
16、g4ACF)g1C4gFA9g4215g163Eg1E67g11B9g19C2g187Dg372Dg126Dg161Bg41D9g2868g2868gBCDg43Ag271DgAC6gB91? g3(g3633g1E15g2E15g41F6g26E9:gA38g2A36g11B9g19C2g1C26g4C24;g372Dg8CBg3FB1g2272:g372DgF4FgA38g2A36g11B9g19C2g1C26g4C24) g3gD0Bg1C3g41F4g527g9FDg4FB8g2D6g3g4609g38B2g422Eg590g1D39g4F0g478g1B66g39E7g2DBg3g4
17、C4g1C3g1DAFg496g41EEg41D1g2D6g3Ag32ABg3g3g33g836g3Bg32ABg3g3g3g2717g1530g2264g2CB4gA3Cg1C26g18AEgAC6gB91g1C3g2347g3966g1D9Fg1C4g3 g3g3g2717g3g2264g3g4C1Eg3g4EC8g3g3g3g2371g303BgD2E: g3g79Dg1C3g1B89g1196g9FDg164Dg2D6g3g3g31.gD58g4013g7E3g2717g2264g4C1Eg4EC8g1C26,g1196g2B4Fg381Ag1421gA01g29E0gD58g3179
18、g15B5g2264g1530g2CB4gA3Cg1C26g4608gA1Fg515g9EBg11BCg1840g2347g3966g1D9Fg1C3g18AEg3966gA26g3179g236Bg8D8,g38B2g34D6g4B6g1C26g4C24,g464Ag45F7g2B4Fg236Bg45Dg2CB4g11CEg5BB,g41D9g1196g2B4Fg775g836g583g54Ag4B6g548g946g1BE9g1E78g1C4g3g3g32.g84Bg41EEg7A7g1D39g2B4FgAADg236Bg8CBg2CB4g422EgE32g4D30g3FB1g1841g5
19、1Cg2D4Fg2193gD60“g515g4EAg46Ag1D5C”,g2D4Fg2193gD60g798g1BE9g57Dg2153g437Fg381Ag1421g2CB4g1196g2B4F,g301Fg1DB1gD60g5543g8E1g1C3g41F4g527g1196g2B4F,g41D9g1196g2B4Fg472Dg1723g9EBg583g50BCg1840g8CFg2CB4g161Bg480,g3E98g29E0g82Ag4B6g4EAg1657g45Dg1D30g35BEg46Dg2CB4g430g4D92,g301Fg1DB1g1C3g46Bg8D8g1C3g164Dg
20、3633g1C3g84Bg4650g1C4g3 g3g3g3g3g34/15/2019 新人教版小学数学四年级上册第8单元教学设计 - 百度文库https:/ 3/9g3g315Cg4BCg422Eg1C26g2C4g166Bg315Cg3g3g422Eg1C26g2C5g3g2709g4FACg4C1Eg4EC8g1C4g3g3g1B89g1196g7B5g11E9g2D6(g1B89g1D80g315C105g4EA5)g3g1B89g1196g2D1Eg2CB4g31.g836g1DC0g31B0g985g2CB4g4BBg5BB,g5AFg1196g2B4Fg41D4g41F6g860
21、g4013g7E3g4C1Eg4EC8g1BE9g1E78g2CB4gF4Ag1E67g1657g9FAg122Bg18AEg4013g7E3g4C1Eg4EC8g2CB4g1D30g548g1BE9g1E78g1C4g32.gE29g7ABg1196g2B4Fg124Dg4205g2B58g1BA0g1196g2E15g41F6g4013g7E3g11CEg4C75g2B4Fg236Bg45Dg2CB4g31B0g985g4C1Eg4EC8g1C4g3g3g1B89g1196g47FDg4CEEg26E9g2D6g3g47FDg26E9:g41D9g1196g2B4Fg4B6g4013g16
22、3Eg1E67g2709g4FACg1D24gA38g2A36,g5AFg1196g2B4Fg2E15g4683g4013g7E3g11CEg4C75g4C1Eg4EC8g3FB1g4639g1919g1D30g548g1BE9g1E78g1C4g3g4CEEg26E9g5AFg1196g2B4Fg174FgA07g860gD58g1C15g1468g2B4Fg236Bg45D,g3CADg2766g4013g7E3g4C1Eg4EC8g2CB4g1BE9g2305g15B8gF4A,g576g1D39g548g4639g1BE9g1E78,g3FB1gE29g7ABg1196g2B4Fg15
23、92g1840g4FEgF4Ag2FFDg1BE9g1E78g45Dg122Bg18AEg1D30g548g1BE9g1E78g2CB4g173Fg41F6g1C4g3g3g1B89g1196g7F6gF37g2D6g3g3g422Eg526g1C3gD2Eg2877g1C4g3g430g2D1Eg1E37g122Cg1196g2D6 .g2C4g430g2C5g381Ag46Bg1196g490g2D6g381Ag1196g5BB2 g3g3g1438:gA3Cg1196g51CgD58g11E6g47FCg3FF1g45F7gFB8g2709g4FACgA47?g1841g51Cg430g
24、43A7g1D95g2D3Bg2D3Bg123Fg46Dg2CB4gFB8g2193gD58g46Ag798g11E6g4EAg68Ag381Ag1421g2CB4g192Fg187Bg350Dg236Bg2709g4FACg1C4(g422Eg526g82Ag2F6A:g1B89g1D80g315C105g4EA5g5BB2g16F5g1C9FgD2Eg3g2C4g4BCg2C5g82Ag2F6Ag1196g490g2D1Eg1E37g2D6g31.g836g1DC0g31B0g985g2CB4g4BBg5BB,g5AFg1196g2B4Fg41D4g41F6g860g4013g7E3g4C
25、1Eg4EC8g1BE9g1E78g2CB4gF4Ag1E67g1657g9FAg122Bg18AEg4013g7E3g4C1Eg4EC8g2CB4g1D30g548g1BE9g1E78g1C4g3g3g32.gE29g7ABg1196g2B4Fg124Dg4205g2B58g1BA0g1196g2E15g41F6g4013g7E3g11CEg4C75g2B4Fg236Bg45Dg2CB4g31B0g985g4C1Eg4EC8g1C4g3g2C4g439g2C5gA38g58Cg19D2g30A6g31.g4227g1196g2B4Fg1883g1530g1B89g1D80g315C105g4
26、EA5g5BB2,g2D3Bg430g2D3Bg496g45Dg2CB4“gFB8”g1C5Fg163Eg1E67g2709g4FACg2CB4g1C4g32.g1545g122Cg1196g2B4Fg4FEg5BB2g45Dg1B66g4CF6g611g169F,g2766gA3Eg4C2g2D28g4D4g2371g1C4g3g464Ag45F7g5BB2g2CB4g16F5g1C9FgD2E,g1196g2B4FgA1Fg515g4B6g4013g860,g496g45Dg2CB4“gFB8”g21FFg2151gA1Ag372Dg2709g454g1550g4FAC,g454g4D92
27、g472Dg3FB1g2709,g21FFg4D923g836g4ACF,g1870g515g27091g1550g4FACg3FB16g836g4ACFg1C4g2868g2868g1C3gFB8gABCg123Fg34D2g21FFg4EA1g1550,g7A1g27093g1550,g163Eg1E67g2709g38E1g4369g2CB4g1C26g4C24g1D30g1241? 3.g778g41D9g1196g2B4Fg291Cg30FBg164Dg3633,g2766gA3Eg34F4g34F7g1196g2B4Fg836g34F4g41D8g41EA,g4224g430g42
28、24g381Ag1421g1C5Fg163Eg1E67g11B9g19C2g2CB4,g381Ag1421g2CB4g1BE9g1E78g430g7A1g4D30g3FB1gF4Ag4BAFg1C26g4C24,g18BAg21FFg34F4g2CB4g41EEg41D1g1BE9g1E78gE9Bg795g3E98g1E6C,g14A6g41D1g31C7g82Ag1870g2B58g2CB4g1C26g4C24g1C4(g1196g2B4FgD58g164Dg3633g41D8g41EAg1C26gA1Fg2B58g381Ag1421g187Bg45Dg2CB4gD36g2877g513g
29、1D2Fg2709g2CB4g4FAC,g45E9g2544g2F6Ag45E9g164Dg3633) 4.g1545g122Cg1196g2B4Fg4224g82Ag381Ag1421g2CB4g1BE9g1E78,g1B89g1438gA1Fg515g18BAgA34g123Fg34F4g2277g18D5g2CB4g43DgA3Cg1BE9g1E78g464Ag45F7g18C5g15A1g1285g2F6Ag82Ag1D95g1C4g3g3g315C1g1550g3g315C2g1550g3g315C3g1550g3g315Cg430g2151g3g2193g4D92(3g836) g
30、315Cg4BCg2151g3g9FDg4D92g836 g315Cg439g2151 g2193g4D92(3g836) g315CgD0Bg2151 g9FDg4D92g836 g315Cg4C4g2151 g2193g4D92(3g836) g315Cg79Dg2151 g9FDg4D92g836 g1BE9g1E78g430:g21FFg2151g27091g1550g4D306g836,3g1550g7A1g4D30g1C26g4C2436=18(g836)g1C4g34/15/2019 新人教版小学数学四年级上册第8单元教学设计 - 百度文库https:/ 4/9g3g315C1g
31、1550g3g315C2g1550g3g315C3g1550g3g315Cg430g2151g3g2193g4D92(3g836) g2193g4D92(g836) g315Cg4BCg2151g3g9FDg4D92(g836) g9FDg4D92(3g836) g439 g21933g315CgD0Bg2151 g9FDg4D92(g836) g1BE9g1E78g4BC:g21FFg2151g27092g1550,3g1550g7A1g4D30g1C26g4C2434=12(g836)g1C4g35.g1545g122Cg1196g2B4Fg1229g2204g454g2FFDg1BE9g
32、1E78,g4224g430g4224gB1Ag2FFDg1BE9g1E78g1D24gA38g2A36,g1D24g38B2g2D31g1C26g4C24g1C4g3g464Ag45F7g3FF2g120Fg2204g45B3,g1196g2B4Fg54AgA01g29E0g315Cg4BCg2FFDg1BE9g1E78g1D24gA38g2A36,gD10g46Ag315Cg4BCg2FFDg1BE9g1E78g7FFg1241g4B6g15B8gF4Ag1C26g4C24,g27093g1550g4FACg1870g2B58g2CB4g1C26g4C24g2204g315Cg430g2F
33、FDg1BE9g1E78g1870g2B58g2CB4g1C26g4C24g3FB1g1241g4CBg1C4g36.g1545g122Cg1196g2B4Fg164Dg3633:g315Cg4BCg2FFDg1BE9g1E78g1C5Fg43Dg1C5Fg1261g1C5Fg1D30g548g1BE9g1E78gA92?g4227g1196g2B4Fg2B58g187Bg45Dg2CB4g1196g7A7g7BDg4205g430g4205g1C4(gD58g1196g2B4Fg124Dg4205g2CB4gE2Ag2E70g43A,g1B89g1438g464Ag45F7g18C5g15A
34、1g1285g2F6Ag82Ag2204g1BE9g1E78g430gABCg1BE9g1E78g4BCg4608g3FB1gA38g2A36,g4608g3FB1g38B2g2D31g1C26g4C24g2CB4g1BE9g1E78) g3g315C1g1550g3g315C2g1550g3g315C3g1550g3g315Cg430g2151g3g2193g4D92(3g836) g2193g4D92(g836) g315Cg4BCg2151g3g9FDg4D92g836 g2193g4D923g836 g315Cg439g2151 g9FDg4D92(3g836) g9FDg4D92(g
35、836) g1BE9g1E78g439:g315Cg430g2151g778g2709g315C1g1550g1C3g315C2g1550g2CB4g2193g4D92,g315Cg4BCg2151g2709g315C1g1550g2CB4g9FDg4D92,g315C3g1550g2CB4g2193g4D92,g315Cg2151g2709g315C2g1550gABCg315C3g1550g2CB4g9FDg4D92,g4609g2FFDg1BE9g1E78g7A1g4D30g1C26g4C24g46A3=9(g836)g1C4(g1285g2F6Ag439g2FFDg1BE9g1E78,
36、g5AFgA3Cg1196g51Cg174FgA07g860gD58g4013g7E3g11CEg4C75g2B4Fg236Bg45Dg2CB4g4C1Eg4EC8g1C26,g3FB1g126DgA1Fg372Dg462Dg2272g1D30g11BCg35BEg2CB4g4639g1919,g3FB1g7A7g1D39g4013g7E3g4C1Eg4EC8g2CB4g548g946g173Fg41F6) 7.g1545g122Cg1196g2B4Fg9EBg164Dg3633gFB2g1DCCg3FB1g27094g1550g4FAC,5g1550g4FAC,6g1550g4FAC10g1
37、550g4FAC,g163Eg1E67g2709g1D24g38B2g2D31g1C26g4C24,g372DgA01g29E0g4F0g478g3FF4g15BB? (1)g4FC6g778g4227g1196g2B4Fg291Cg30FBg164Dg3633g1C4g3(2)g2766gA3Eg34F4g34F7g1196g2B4Fg4D4g2371g41D8g41EA,g14A6g4224g82AgA34g381Ag2CB4g1723g2305g1C4g464Ag45F7g1229g1196g2B4Fg1723g2305g2CB4g1582g34E3,g3631g1438gA1Fg515
38、g1545g122Cg166Bg3503:gFB2g1DCCg3FB1g2709g2CB4g1550g1BA0g1C5Fg9FCg1BA0,2g1550g1550gD60g2709g1261gA1Fg515g4B6;gFB2g1DCCg3FB1g2709g2CB4g1550g1BA0g1C5Fg985g1BA0,gA1Fg515g7782g1550g1550gD60g2709,g1D30gA3Eg2CB43g1550,g1261g1939g1841g51Cg87Dg4D92g41E2g45F7g2CB4“g1BE9g1E78g439”g9EBg2709g1D30g38B2g2D31g1C26g
39、4C24g1C4g3g439g1C3g1903g1285g122Cg1196g2D6g3g1545g122Cg1196g2B4Fg11BCg1840g1B89g1D80g315C108g4EA5g2CB4“g34F3g490g4BCg971”g315C4g4EC8g1C4 (1)g1545g122Cg1196g2B4Fg3FF2g120Fg1B89g1D80g315Cg4EA5g34F3g490g4BCg971g315Cg4EC8g2CB4g16F5g1C9FgD2E,g4224g430g4224g4FEgD2Eg45Dg1B66g4CF6g860g2CB4g611g169F,g14A6g42
40、24g82Ag4EC8g45Dg4D30g3FB1g4013g7E3g2CB4g4C1Eg4EC8g1C4g3gD2Eg45DgA7Ag41F9g1841g51C,g4F40g9B5g1D393g57Dg4EAEg11D2,g21FFg4EAg26E9g4B6g454g45Ag3A0C,g363CgA1Ag1D39g454g45Ag9D8g1438,g4C1Eg4EC8g1C5Fg163Eg1E67g11B9g19C2g26C2g3A0Cg2CB4g4EAAg14BFg2204g45B3gA38g2A36g1C4g3(2)g1196g2B4FgD58g164Dg3633g4609g45Ag4C
41、1Eg4EC8g1C26,g3631g1438g3FB1g1545g122Cg1196g2B4Fg9F2g2797g5BB2g2CB4g1BE9g2305g9EBg164Dg3633,g14A6g291Cg30FBg41EEg41D1g82Ag26C2g3A0Cg2CB4g1BE9g1E78,g14A6g4224g1C3Eg2A36g2B61g1C4g3(3)g1196g2B4Fg41EEg41D1g11BCgA3E,g3631g1438g2B58g18C5g15A1g1285g2F6Ag506g51Cg2CB4g1BE9g1E78,g14A6g4639g82Ag1D30g548g1BE9g1
42、E78g1C4g3g3g4EAEg11D21 g4EAEg11D22 g4EAEg11D23 g315Cg430g2151g3g315Cg45Ag3A0Cg3g315C1g45Ag3A0C g315Cg4BCg2151g3g315C2g45Ag3A0C g315Cg45Ag3A0Cg3g315Cg439g2151 g315Cg45Ag3A0Cg3g315C2g45Ag3A0Cg3g3g847g3E98g1285g2F6A,g1919g548g1BE9g1E78,g5AFgA3Cg1196g51Cg174FgA07g860g2194g2FFDg1BE9g1E78g1C12g22D1g1D39g4
43、EAg8CBgABCg4374g24C0g2CB4g239Ag4369,g363Cg444g9F8g38B2g2D31g1C26g4C24,g1870g515g2194g1BE9g1E78g46Ag1D30g548g1BE9g1E78g1C4(gFB2g1DCCg1196g2B4Fg2CB4g1BE9g1E78g43DgA3C,g48FgA1Fg41D9g7A6g4224g82Ag381Ag1421g2CB4g1723g2305,g41D9g1196g2B4Fg464Ag45F7g1BE9g1E78g2CB4g1229g2204,g4E2g381Ag174FgA07g860g43Ag4D92g
44、2CB4g1BE9g1E78g46Ag1D30g548g1BE9g1E78) gD0Bg1C3g41F4g527g9FDg4FB8g2D6g3g1438:g4609g38B2g422Eg590g1196g860g4B6g4F0g478? 4/15/2019 新人教版小学数学四年级上册第8单元教学设计 - 百度文库https:/ 5/9g1196g2B4Fg381Ag2B61g4D4g2371gA34g381Ag2CB4g1B66g39E7g583g54Ag1C4g3 g4C4g1C3g836g1272g58Cg44Ag41EEg41D1g2D6g3Ag32ABg31.g2B58g430gA13
45、g14A3g14C5g4B35g277Eg4FAC,g677g41EEg277Eg430g1550g4D304g836g4ACFg1C4g21FFg430g4D92g4D302g836g4ACF,g21FFg2151g2193gFADgA1Fg515g277E2g1550g1C4g277E3g1550g4FACg3823g1241g4D30g3FB1g810g836g4ACF? 2.g1723g430g1723,gE9Bg430gE9Bg1C4g3(1)g430g1550g4FACg2709(g3)g4D92,gFB2g1DCCg430g4D92g4D30g3FB12g836g4ACF,g27
46、09g1550g4D30g3FB1(g3)g836g4ACFg1C4g32g2709g1550g4FACg4D30g3FB14g836g4ACF,g430gA13g14A3g14C5g4B35g21FFg2151gA1Fg515g27093g1550g4FAC,g46D3g478g27093g1550g4FACg3823g1241g4D30g3FB1(g3)g836g4ACFg1C4g3(3)g279E1g45Ag5451g3CFBg4D30g3FB18g836g4ACF,g430gA13g4B35g430g2151gA1Fg515g279E10g45Ag5451g3CFB,g46D3g478
47、g279E10g45Ag5451g3CFBg3823g1241g4D30g3FB1(g3)g836g4ACFg1C4g3(g3633g1E15g2E15g41F6g26E9:g2709g4FACg4C1Eg4EC8;g372Dg8CBg3FB1g2272:g372DgA38g2A36g11B9g19C2g4EAAg14BF,g38B2g2D31g1C26g4C24) Bg32ABg3g2B58g430gA13g14A3g14C5g4B35g277Eg4FAC,g21FFg2151g372DgA3Cg1C26g277Eg454g1550g4FAC,gFB2g1DCCg277E1g1550g4FA
48、Cg4D30g3FB12g836g4ACF(g677g11CAg2193g1C3g9FDg4D92gA34g4D301g836g4ACF),g4C1E: (1)g277E3g1550g4FACg3823g1241g4D30g3FB1g810g836g4ACF?g163Eg1E67g277E? (2)g277E4g1550g4FACg3823g1241g4D30g3FB1g810g836g4ACFg163Eg1E67g277E 31 ? ()g277E0g1550g4FACg3823g1241g4D30g3FB1g810g836g4ACF g3633g1E15g2E15g41F6g26E9:g2
49、709g4FACg4C1Eg4EC8;g372Dg8CBg3FB1g2272:g372DgA38g2A36g11B9g19C2g4EAAg14BF,g38B2g2D31g1C26g4C24) Ag32ABg31. 6g836g4ACFg32. ()g454g34g3(2)4g3(3)8 Bg32ABg3(1)3g836(gA3Cg1B89g1D80g2709g4FACg1BE9g2305)g3(2)4g836g1C4g778g277Eg454g45Ag4D302g836g4ACF,g7BDg277Eg454g45Ag4608g4D302g836g4ACFg1C4g3g836g3g79Dg1C3
50、g1DAFg496g41EEg41D1g2D6g3g3g3g3g3g3g3g3g3g3g2709g3g4FACg3g4C1Eg3g4EC8g3g3g3g2709g4FACg2CB4g1D30g5A3g1BE9g1E78g1C5Fg21FFg430g2151g126DgA1Fg372DgD60g41D9g4B35g43Ag1939g3FB1g2272g1B6Eg1D30gF4Ag2CB4g4FAC,g4609g1E67g1C12g22D1g1D39g239Ag4369g4374g24C0,g9F8g38B2g2D31g4B6g1C26g4C24g1C4g3g1B89g1196g9FDg164Dg
