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《义务教育数学课程标准》指出:数学活动必须建立在学生认知发展水平和已有的知识经验上,学生的已有知识经验是实现有效教学的基础。根据“角的度量”这一课关于技能教学的困惑和疑问,深入展开探究:为什么学生会有这么多的错误?追根溯底寻缘由。通过前测了解学生的已有知识经验,了解他们的困难,后测发现教学存在的问题。分析原因,总结寻找解决的策略,使教学更加有效。让技能教学变得丰富、厚重而充满思考,让学生获得持续发展,让教学更加有效。
The Standard of Compulsory Education Mathematics Curriculum states that the mathematics activities must be based on the students ’level of cognitive development and existing knowledge and experience. The students’ existing knowledge and experience are the basis for effective teaching. According to “angle measurement ” this course on the teaching of skills puzzles and questions, in-depth exploration: why students will have so many mistakes? Through the pre-test understanding of students’ existing knowledge and experience to understand their difficulties, post-test found that teaching problems. Analysis of the reasons, summed up the strategy to find solutions to make teaching more effective. Let skills teaching become rich, heavy and full of thinking, so that students can achieve sustainable development and make teaching more effective.