沪教版二年级下册数学 三位数减法.ppt

教学标》新课导人(新课索)《课内练力水课小结)【厅作业 三位数减法 Evaluaton only ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L 教学标》新课导人(新课索)《课内练力水课小结)【厅作业 教学目标 1、培养学生迁移能力,能将两位数 横式(竖式)减法迁移到三位数横 式(竖式)计算 2、培养学生建模能力,用不同的辅 助材料来建构三位数减法的模式。 3、培养学生算法思维多样化 Evaluaton only ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L 数学|标》【新课入(新课索)《内练习本课小结)(作业 新课导入 Evaluaton only ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L 数学|标》【新课入(新课索)《内练习本课小结)(作业 故事引入: 小丁丁和小 巧去南极考察, 看看他们为我们 收集了一些什么 信息? Evaluaton only ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L 数学|标》【新课入(新课索)《内练习本课小结)(作业 故事引入: 小丁丁和小巧去南 极考察,看看他们为我 们收集了一些什么信息? 127只245只223只 Evaluaton only ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L 数学|标》【新课入(新课索)《内练习本课小结)(作业 新课探索 探究 揉究二探究二 Evaluaton only ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L 教学目标(新课导入)(新课探索)(课内练习)(本课小结)(课后作业 探究 企鹅比雪海燕 多多少只? 245-223 的245223面 百减百200-200 20+2 十减十40-20 22 个减个5-3 答:企鹅比雪海燕多22只 探究 探究二探究三一m Evaluaton only ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L 数学|标》【新课入(新课索)《内练习本课小结)(作业 探究二 企鹅比海豹多多少只? 245-127 探究 探究二探究二 Evaluaton only ch Asposeslides for NET 4o dient P Evaluation only. Created with Aspose Slides for NET 4.0 dient Profilo 71 Copyright 2004-2017Aspose Pty L 教学目标)新课导入)(新课探索)(课内练习)(本课小结)(课后作业 探究二 245-127 245-109-20-7 8 ①先减百245-100=145 再减十145-20=125 最后减个125-7=118 探究 探究 探究二m Evaluaton only ch Asposeslides for NET 4o dient P Evaluation only. Created