苏教版数学六年级上册(方程)课件.ppt

苏教版六年级数学上册 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 教学目标 1.知识目标：使大家在解决实际问题的过程中，理解并掌握形如ax+bx=c的方程的解法，会列上述方程解决两步计算的实际问题。 2.能力目标：掌握根据题意找出数量间相等关系的方法，养成根据等量关系列方程的习惯。 3.情感目标：提高分析数量关系的能力，培养大家思维的灵活性。 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. 西安大雁塔高64米，比小雁塔高度的2倍少22米。小雁塔高多少米？ 小雁塔的高度×2－22=大雁塔的高度 解：设小雁塔高x米。 2x-22=64 2x-22+22=64+22 2x=86 x=43 答：小雁塔高43米。 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. 白色皮共有20块，比黑色皮的2倍少4块。共有多少块黑色皮？ Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 解：设共有x块黑色皮。 黑色皮的块数×2 －白色皮的块数=4 2x－20=4 先把2x看成一个整体 2x －20 + 20 = 4 + 20 2x = 24 2x÷2 = 24÷2 x = 12 答：黑色皮共有12块。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. （1）弄清题意，找出未知数，并用x表示。 （2）找出应用题中数量之间的相等关系，列方程； （3）解方程； （4）检验，写出答案。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 丽丽 苗苗 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 你想的数是30。 丽丽 苗苗 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.