在小学数学教学中,运用直观教具向学生进行演示是非常重要的教学手段之一。教师有时用这种演示法就能够达到最佳的教学效果。我们拿圆锥体体积计算公式为例,它是数学的一个重点内容,同时还是在学生学习完求圆柱体体积计算公式的基础上发展的一个新知识点,也可以说是在已有的知识基础上对新知识的升华与扩展。我觉得在教这节课时教师可以采用直观教具演示方法,才能最好地达到预期的教学目的和最佳的教学效果,而且在演示过程中教师应该做到以下两点: In elementary mathematics teaching, the use of visual aids to demonstrate to students is one of the most important teaching methods. Teachers sometimes use this demonstration method to achieve the best teaching results. We take the cone volume calculation formula, for example, it is a key content of mathematics, but also students in learning cylinder volume calculation formula based on the development of a new knowledge point, it can be said that in the existing knowledge base On the new knowledge of the sublimation and expansion. I think when teaching this lesson, teachers can use visual aids demonstration method, in order to best achieve the desired teaching purpose and the best teaching effect, but also in the presentation process teachers should do the following two points: