直观教学能把抽象的知识具体化、形象化,从而有助于学生对知识的理解、巩固和记忆,有利于激发学生的学习兴趣和发展思维能力。而直观教学总离不开教具,如实物、模型、挂图、幻灯等。要使直观教具运用起到提高教学效果的作用,应注意以下几点: 一、根据学生的年龄特征使用教具不同年龄的学生掌握知识具有不同的特点,教师在使用直观教具时,应按照学生的认识水平选取和使用教具。一般说来,小学一、二年级学生是用“形式、声音、色彩和感觉”来思维的。教学中就要广泛而多次地使用直观教具,使低年级学生在看得见、听得到、感受到的具体形象的过程中学会思维。随着年龄的增长和理解水平的提高,学生的抽象思维和逻辑思维逐渐发展,教具使用也随之逐渐减少。二、根据教学需要使用教具 Intuitive teaching can abstract and visualize abstract knowledge, which helps students to understand, consolidate and memorize knowledge, which is good for stimulating students' interest in learning and developing their thinking ability. Intuitive teaching can not be separated from teaching aids, such as physical objects, models, wall charts, slideshows and so on. In order to make visual teaching aids play a role in improving teaching effectiveness, we should pay attention to the following points: First, according to the characteristics of the age of the students using the teaching aids Students of different ages have different characteristics of knowledge, teachers should use intuitive teaching aids, Awareness level selection and use of teaching aids. Generally speaking, primary and secondary students think in terms of “form, voice, color and feeling”. Teaching should be widely and repeatedly use visual aids, so that the younger students in the visible, can hear, feel the specific image of the process of thinking. As the age increases and the level of understanding increases, the students' abstract thinking and logical thinking develop gradually, and the use of teaching aids is also gradually reduced. Second, according to the teaching needs of teaching aids