《数学课程标准(2011版)》明确指出:生成性资源是在教学过程中动态生成的,如师生交谈及生生交谈过程中产生的新情境、新问题、新思路、新方法、新结果等。合理地利用生成性资源有利于提高教学的有效性。叶澜教授说过:“课堂应是向未知方向挺进的旅程,随时都有可能发现意外的通道和美丽的图景。而不是一切都必须遵循没有激情的过程。”动态生成是新课程、新课堂的显著特征,因为有了生成,课堂才呈现出生命的活力。在教学过程中,常常会生成一些意料之外的新信息、新问题。面对一些难以预 Mathematical Curriculum Standard (2011 Edition) clearly states: Generative resources are dynamically generated in the teaching process, such as new situations, new problems, new ideas, new methods, new results, etc. . Reasonable use of generative resources will help improve the effectiveness of teaching. Professor Ye Lan said: “Classroom should be a journey to the unknown direction, at any time may find unexpected passageway and beautiful scenery.Not all must follow the process of non-passion.” "Dynamic generation is a new curriculum, The distinctive characteristics of the new classroom, because of the generation, the classroom showed the vitality of life. In the teaching process, often generate some unexpected new information, new problems. Face some hard to predict