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数学概念是学习和掌握数学基础知识、基本技能,发展思维能力的基石。教学中如何按照概念形成的过程和学生认识、掌握概念的规律,使学生学好概念,我进行了一些尝试。一、创设情境,建立表象,帮助学生形成概念学生形成概念总是遵循由特殊到一般,由具体到抽象的规律。因此,在教学概念时,教师创设使学生感到真实的、具体的、有趣的问题情境,即丰富的感知环境,让学生身临其境,激发思维,建立表象,为形成概念奠定基础。如教学求“平均数”时,教师选取学生熟悉的事物创设问题情境,提供感知环境。教师取出5支红杆铅笔,3支绿杆铅笔,1支花杆铅笔,让学生摆成三等份。学生很快
Mathematical concept is to learn and master the basic knowledge of mathematics, basic skills, the development of thinking the cornerstone. How to follow the concept of the formation of the process of teaching and student awareness, master the concept of the law, so that students learn the concept, I made some attempts. First, create the situation, establish the appearance, to help students form the concept Students always follow the concept of the formation from the special to the general, from the specific to the law of the abstraction. Therefore, in the teaching concept, the teacher creates a real, concrete and interesting problem situation that students feel, that is, a rich cognitive environment, so that students immersive, inspire thinking, establish the appearance and lay the foundation for the formation of the concept. Such as teaching for “average”, the teacher selected students familiar things to create a problem situation, to provide a perception of the environment. The teacher took out 5 red pencil, 3 green pencil, 1 flower stem pencil, so that students put in three equal parts. Students soon