苏教四级上册解决问题策略.pptx

苏教版四年级数学上册 甘棠小学 张舜卿 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 司马光砸缸 有一次，司马光跟小伙伴们在后院里玩 耍。院子里有一口大水缸，有个小孩爬 到缸沿上玩，一不小心，掉到缸里。缸 大水深，眼看那孩子快要没顶了。别的 孩子们一见出了事，吓得边哭边喊，跑 到外面向大人求救。司马光却急中生智 ，从地上捡起一块大石头，使劲向水缸 砸去，“砰！”水缸破了，缸里的水流了 出来，被淹在水里的小孩也得救了。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 提问：从图上你知道哪些数学信息？ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 你能用自己喜欢的方法把这些信 息进行整理吗？ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 按照整理出的思路，怎样列式解答？ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 18 3 =6 (元) 6 5 = 30 (元) 我用了42元 小华 小明 小军 答：小华用去30元。 小明3 本18元 小华5 本 ? 元 小华用去多少元? 18 3 5 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 提问：要求小军买了多少本，你们能先 列表整理吗？ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 小明3 本18元 小军? 本42元 18 3 =6 (元) 42 6 =7 (本) 答：小军能买7本。 42 （18 3）Evaluation only. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 在列表解答这两个问题时，有什么 相同的地方？有什么不同的地方？ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 3 本 18 元 5 本 ( )元 ( )本 42 元 小明 3 本 18 元 小华 5 本 ？元 小军 ？本 42 元 如果把两次列的表格合并起来，你 能说出括号里的得数吗？通过观察， 你有什么发现？ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 先根据题目的条件和问题列表整理，再解答。 168615 =2815 =420(毫米) 答:15本这样的字 典摞在一起高420 毫米。 504(1686) =50428 =18(本) 答:有18本字典。 6 本高 168 毫米 15 本高 毫米 本高 504 毫米 ? ? 420 18 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 56 48 6 842 7 5668 =3368 =42（元） 答：一个排球42元。 56648 =33648 = 7(个) 答：能买7个篮球。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 小结 ： 通过这节课学习，你 有什么收获？ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 丽丽、圆圆、静静扎着漂亮的蝴蝶结一起拍照片， 她们一个扎着红蝴蝶结，一个扎着蓝蝴蝶结，一 个扎着紫蝴蝶结。 已知：丽丽扎的不是紫的，圆圆扎的不是红的， 静静身边的两个朋友一个扎着红蝴蝶结，一个扎 着蓝蝴蝶结。猜猜：她们各扎了什么颜色的蝴蝶 结？ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspos