论文部分内容阅读
新授课以传授新知识为主,是练习课和复习课的基础。如何提高新授课的教学质量呢?我认为,关键是教师要在“吃透两头”的基础上采用恰当的教学方法来激发学生的学习兴趣,使教材在学生心理中产生吸引力,才能逐步训练学生的课堂注意力。我觉得小学数学新授课的兴趣培养应抓住以下几点: 一、运用直观 诱导思维 小学生的思维具有较大的具体性、形象性,一开始学生对许多枯燥、抽象的数学概念、法则、公式、定理很难产生兴趣,觉得乏味。因此,教师在传授知识时,必须首先借助于直观教具,使学生的思维、理解、记忆等认识活动达到兴奋状态。例如,教圆锥体的体积时,教师先出示圆锥体模型,复习底面、周长、高等概念,然后再拿出同底等高的圆柱体进行比较,并将圆锥体模型装满细沙,倒进圆柱体模型,连倒三次,正好倒满,证明圆锥体的体积等于同底等高圆柱体体积的三分之一。这就能使学生在了解圆柱体的体积计算基础上理解圆锥体的体积计算公式,使数形结合,把形体寓于抽象公式之中,培养学生的空间想象力。 二、引入谈话 激发求知欲 生动有趣,通俗易懂地引入谈话,能够激发学生浓厚的学习兴趣,点燃小学生智慧的火花。如,教比例尺一章时,教师进行了这样的谈话,我们检查一幅图画得好不好,主要看画得象不象,而要想把图画好画象
New lectures to teach new knowledge, is the practice and review of the basis. How to improve the teaching quality of new lectures? In my opinion, the key is that teachers should adopt appropriate teaching methods to stimulate students 'interest in learning on the basis of “getting through both ends” so as to make the teaching materials attractive to students' psychology so as to gradually train students Classroom attention. I think primary school mathematics teaching of new interest should seize the following points: First, the use of intuitive thinking The thinking of primary school students with greater specificity, image, the beginning of many students on the boring, abstract mathematical concepts, rules, formulas Theorem difficult to generate interest, feel boring. Therefore, when teachers impart knowledge, they must first make use of intuitive teaching aids to enable students to think, understand, remember and other cognitive activities to achieve the state of excitement. For example, when teaching the volume of a cone, the teacher first presents the cone model, reviewing the concept of bottom surface, perimeter, and higher concept, and then comparing with a cylinder of the same height and filling the cone model with sand, Into the cylinder model, and even down three times, just full down, prove that the cone volume equal to one-third of the same volume at the same height of the cylinder. This will enable students to understand the calculation of the volume of the cylinder based on the understanding of the cone volume calculation formula, so that the number of forms, the body in the abstract formula to cultivate students' space imagination. Second, the introduction of a conversation to stimulate curiosity vivid and interesting, easy to understand the introduction of the conversation, to stimulate students' interest in learning, ignite the spark of primary school students wisdom. For example, when teaching a scale chapter, the teacher conducted such a conversation. We checked whether a picture was well or not.