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策划人语:教学是预设与生成、封闭与开放的矛盾统一体。只按预设进行的课堂,只是教师个人精彩的表演,学生的主体作用难以凸显;只按生成进行的课堂,会是漫无目的的闲谈,教师的主导作用淡化甚至失去。因此,《数学课程标准》(2011年版)指出:“教学中应当注意……‘预设’与‘生成’关系”“应以本标准为依据,把握好教材的编写意图和教学内容的教育价值……根据所教班级学生的实际情况,选择贴切的教学素材和教学流程,准确地体现基本理念和内容标准规定的要求”“师生双方的互动往往会‘生成’一些新的教学资源,这就需要教师能够及时把握,因势利导,适时调整预案,使教学活动收到更好的效果。”
Planning language: teaching is the preconceived and generated, closed and open contradiction unity. Only by default the classroom is only a wonderful performance of individual teachers, the role of students is difficult to highlight the main role; only generated by the classroom, will be a purposeless chat, the teacher’s role played down or even dilute. Therefore, “Mathematical Curriculum Standard” (2011 Edition) pointed out: “teaching should be noted that ... ’presupposition’ and ’generate’ relationship ” “should be based on this standard, to grasp the preparation of teaching materials and teaching content The value of education ...... According to the actual situation of the students in the class to teach, select the appropriate teaching materials and teaching processes, accurately reflect the basic concepts and content standards requirements ”" The interaction between teachers and students tend to ’generate’ some new Of teaching resources, which requires teachers to grasp in a timely manner, make the best use of the situation, adjust the plan in a timely manner, so that teaching activities receive better results.