一、利用信息技术呈现丰富形象的感性材料,但要切中主题,避免喧宾夺主在小学阶段,学生的思维过程要经过感知—表象—形象思维—抽象思维几个阶段,因此在数学教学中,要想让学生能够掌握并运用知识,一方面要给他们提供丰富的感性材料,使他们对事物获得鲜明而清晰的印象,为抽象概括奠定基础。而信息技术的运用,恰好能够方便简洁的创造这一有利条件,满足数学课堂上学生对感性材料的渴求。例如,在教学《长方体和正方体》这一课时,为了使学生能够顺利的抽象出长正 First, the use of information technology to show the rich image of the perceptual material, but to cut the theme, to avoid being overwhelming At primary school, the student’s thinking process to go through the perception - appearance - thinking of the image - the abstract thinking of several stages, so in mathematics teaching, want To enable students to master and apply knowledge, on the one hand, to provide them with rich and sensuous materials so that they can get a clear and vivid impression of things and lay the foundation for an abstract summary. The use of information technology, just to be able to facilitate the simple and convenient to create this favorable conditions to meet the mathematics classroom students desire for sensual materials. For example, in the teaching of “cuboid and cube” this class, in order to enable students to smooth abstract abstraction