文档介绍：Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. % % Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 教学目标知识与技能: 经历从实际问题中抽象出分数的过程,体会引入百分数的必要性,理解百分数的意义,会读写百分数。过程与方法: 在具体的情境中,理解百分数的意义,体会百分数与日常生活的密切联系。重点:理解百分数的意义,能正确读写百分数难点:百分数与分数的联系和区别 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 什么叫百分数? 百分数的意义是什么? 如何读写百分数? 小伙伴们!这节课有信心把我们弄懂吗? Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 你认为应该选派哪名队员? 我曾经罚点球 20 次,罚中 18 10 次,罚中 7次. 我曾经罚点球 25 次,罚中 21 次. Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. = == 20 1625 19 80 100 1号投球水平最高! 10 7 100 70 100 76 不好比较投篮总数投中次数投中次数占投篮总数的几分之几 1 号 20 16 2 号 107 3 号 25 19 10 7 25 19 45 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 科技小组做黄豆种子发芽实验,3 205 二号 257 三号 50 11 你认为哪个品种的发芽情况最好? Evaluation only. Evaluation only. Created with Client Profile . Created with