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[人教新课标]五年级语文上册演示课件假如没有灰尘.ppt

发布:2017-04-03约3.78千字共13页下载文档
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第三组 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1.朗读课文,读完说说没有灰尘行不行? 2.边读边画出生字词,多读几遍,体会在课文的意思 。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 削 弱 调 节 朝 晖 尘埃 日晕 湿漉漉 (xuē) (tiáo) (zhāo) (āi) (yùn) (lù) 庞然大物 气象万千 古往今来 时时勤拂拭 ,勿 使染尘埃 (fú shì) (wù) Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1)默读课文,看看灰尘有什么 特点?用“──”画出来。灰尘有什么作用?用“﹏﹏”画出来。 2)与同组同学互相交流。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 灰尘的特点 作用 说明 方法 2. 3. 散射光线 使光线变柔和 不加选择地散射 七色阳光 使天空有颜色变化 具有吸湿性 调节气候, 气象万千 1 做假设 做假设 做假设 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.    假如自然界真的没有灰 尘,我们将面临怎样的情 形呢?用一段话说明。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5
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