《五年级数学上册认识分数课件冀教版》由会员分享，可在线阅读，更多相关《五年级数学上册认识分数课件冀教版（14页珍藏版）》请在金锄头文库上搜索。
1、冀教版五年级数学上册冀教版五年级数学上册Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.教学目标1.知识与技能：认识真分数、假分数与带分数；会 读写假分数和带分数；掌握真分数、假分数与带
2、分数的特征，明确它们之间的联系和区别。 2.过程与方法：通过认识真分数、假分数与带分数 ，培养大家观察、比较和抽象概括的能力。 3.情感、态度与价值观：积极参与数学活动，对分 数知识充满好奇心，培养同学们学习数学的兴趣 。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pt
3、y Ltd.Copyright 2004-2011 Aspose Pty Ltd.我会说真分数你能用分数来表示下图各阴影部分吗？（真分数）像Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.
4、我还会说假分数（假分数）像Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.它比1小它大于或等于1分子比分母小分子等于分母真分数假分数像像像分子比分母大或Evaluation only.Ev
5、aluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.分母是5的假分数有：分母是5的真分数有：分子是5的假分数有：5 45 35 25 15 51 52 53 54 55 56 57 58 5Evaluation only.Eva
6、luation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.和 合成的, 可以写做 11 41 45 4（ ）（ ）15 823 4一个整数和一个真分数合成的数，叫做带分数。4 4（就是1）5 4是Evaluation only.Eval
7、uation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.5 83 41 4121121121一个整数和一个真分数合成的数，叫做带分数。整数部分。分数部分Evaluation only.Evaluation only. Created w
8、ith Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.3.把下列各个分数分别填在适当的圈内。52 61 94 1211 47 530 813 2060 1920 88真分数假分数Evaluation only.Evaluation only. Created with Aspo
9、se.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.真分数52 61 94 1211Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created
10、with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.475308132060 192088假分数530 206088530 206088530 206088Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides
11、 for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.4.填空。在分数 中（a为自然数）（1）当a 时，它是真分数。（2）当a 时，它是假分数。（3）当a 时，它可以化成整 数。a8大于或等于8小于 8是8的倍数Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspo
12、se.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.5.有一个分数，分子和分母的积是28，这个分 数可能是： 47 214281 74 142128真分数假分数128 214 128 214 128 214Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created wi
13、th Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.本课小结认识真分数、假分数与带分数；会读写 假分数和带分数；掌握真分数、假分数与 带分数的特征，明确它们之间的联系和区 别。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.
