浅谈多媒体在高中数学教学中的应用.docx

高中数学对学生的思维能力和逻辑能力要求较高，因此成为众多高中生感到头疼的科目之一。随着新课程改革的发展，为了提高教学的有效性，高中数学教师纷纷创新了多种教学方法，其中包括多媒体教学法。但是在实际学习中，学生的学习效率依然得不到明显的提升，引起高中数学教师的担忧。本文就目前多媒体教学应用中存在的问题进行详细分析，并根据问题提出相关的对策。一、多媒体在我国高中数学教学应用中出现的问题1.使学生养成了不良的学习习惯多媒体技术在教学中的应用具有较多的优势，但是，正是由于多媒体技术在教学中的应用优势，导致目前我国高中学生逐渐养成了不爱听讲的坏习惯。为什么会这样呢？很多学生认为，在课堂中不听教师讲课也无所谓，因为回家后可以自己看着课件进行复习；而有些学生则是在课堂中碰到不明白的地方时，会寄希望于“回家再研究”。这些不良学习习惯使学生在课堂中的听课效率直线下降，而大部分学生在课间或者回家后并不会真的对着课件进行巩固和研究，久而久之，学生的学习效率就受到了严重的影响。2.学生过多地关注多媒体多媒体画面具有动态化、丰富性，同时还能够发出声音，这些特点是教师在多媒体应用中看重的优势，也是调动学生学习兴趣的有利凭证。但如果过多地运用多媒体，这些因素对学生的吸引力过剩，导致学生在多媒体教学中经常出现注意力过度集中的问题。例如，教师在教学中为了提高学生对课堂内容的关注度，在PPT上放置了学生喜欢的卡通动画图像作为插图。学生在看到插图时却忘了关注学习内容，而一心想着插图动画的内容，影响整节课的学习效率。多媒体技术对学生的过度吸引力是其应用中需要重点关注的问题。3.人机互动形式影响了正常的师生交流多媒体技术的应用能够减少传统教学中教师在黑板上书写、演练解答公式的时间，对于节省时间、提高教学效率有着一定的作用。然而，在传统的教学中，教师可以让学生在黑板上进行动手操作和演练，师生之间在这种交流形式也更为密切。多媒体教学应用中教师对学生的教学需要通过鼠标进行操作，学生也只能通过口头表达完成演算。这种人机互动模式的应用阻碍了教师和学生之间正常的课堂交流，其实际上是减弱了学生的主体性地位，对教学效果的提高具有不良的影响。二、多媒体在高中数学教学中应用的对策1.适度制作多媒体课件教师在多媒体应用过程中主要的应用即是课件的制作，在课件制作过程中，坚持适度原则是教师需要注意的问题。教师应该明白，课件的制作目的是提高学生的学习水平和学习能力，促进学生数学学习的进步。课件中可以增加少量的视频或者图片，但是要坚持适度原则。一般来说，一节课的时间为45分钟，教师若要在课件中插入声音插件，则必须要少于三次；图片在新颖度上要适度，不能够选取学生喜爱程度非常高的、最近非常流行的；而在教学过程中，教师也不能过度依赖多媒体，要与学生进行适当的眼神交流，加强与学生的情感沟通。2.提高学生在课堂中的参与度多媒体在高中数学教学中的应用并不代表着教师要完全取代传统的黑板教学形式。为了调动学生课堂中的积极性和参与性，教师在多媒体应用过程中可以让学生在画板中进行课堂参与。将黑板换成白板，让学生进行白板演练同样，能够提高学生在课堂中的参与度，促进学生的发展。以抛物线的画图为例，教师可先让学生根据题目在白板上画出抛物线。白板画图的速度较快，不会浪费课堂太多的时间，同时还能够提高学生在课堂中的参与度。3.加强对学生的关注度多媒体教学还需要教师在教学过程中加强对学生的关注度，防止学生在课堂中出现学习不认真或者开小差的情况，端正学生的学习态度。当然，学生在课堂中也有可能出现对多媒体技术过度依赖的情况，教师需要从旁指引，将学生的关注点由多媒体向教材内容转变，提高学生的学习效率。综上所述，多媒体在我国高中数学教学应用中出现的问题主要有：第一，养成了学生不良的学习习惯；第二，学生过多的关注多媒体，影响了学习效率；第三，人机互动形式影响了正常的师生交流。要改变这种现状，提高多媒体在高中数学教学中的应用效率需要教师适度制作多媒体课件，采取有效措施，提高学生在课堂中的参与度，并加强对学生的关注。High school math to the students thinking ability and logical ability the demand is higher, therefore become one of the subjects of many high school students feel a headache. With the development of the new curriculum reform, in order to improve teaching effectiveness, high school math teachers have a variety of teaching methods innovation, including the multimedia teaching method. But in the actual learning, students learning efficiency is still not clear, cause the concerns of the high school mathematics teacher. In this paper, the problem existing in the application of multimedia teaching at present, a detailed analysis, and put forward relevant countermeasures according to the problem.A, multimedia application problems arising from the high school mathematics teaching in our country1. Make students form the bad habits of studyThe application of multimedia technology in teaching has many advantages, however, it is because of the application of multimedia technology in teaching advantages, led to the current high school students in China gradually formed the bad habit of not listening. Why is this so? Many students think that, dont listen to the teacher in the classroom lecture also doesnt matter, because after go home, can yourself watching courseware in review. And some students are in the classroom met not understand of place, will hope that the home. These bad study habits help students listen to the teacher in the classroom efficiency plummeted, and most of the students at recess or after coming home will not really to consolidate and study of the courseware, over time, the students learning efficiency is affected by the serious.2. Students too much on multimediaMultimedia images with a dynamic, richness, and at the same time can also sound, these characteristics are the advantages of teachers in the multimedia application value, is also a good document to mobilize students learning interest. But if too much use of multimedia, the excess appeal of these factors on the students lead to students in the multimedia teaching often excessive concentration of attention problems. Teachers in the teaching, for example, in order to improve the awareness of the course content, placed on the PPT students like cartoon image as illustrations. Students see illustrations but forget to focus on learning content, and preoccupied with illustrations animation content, influence the learning efficiency of the whole class. Excessive multimedia technology to students appeal is its applications need to focus on the problem.3. The human-computer interaction form affected the normal communication between teachers and studentsThe application of multimedia technology can reduce the traditional teaching of teachers on the blackboard writing, practice solution formula of the time, to save time, improve teaching efficiency has a certain effect. However, in the traditional teaching, teachers can ask students to operating on the blackboard and drills, in such a form of communication between teachers and students are also more closely. Teacher to the students in the application of multimedia teaching teaching need through the mouse to operate, students also can only be done through oral calculus. The application of the man-machine interaction pattern hindered the normal classroom communication between teachers and students, it is actually weaken the students subjectivity, has a bad influence on the improvement of teaching effect.Second, the multimedia application in the high school mathematics teaching countermeasures1. The moderate multimedia coursewareTeachers in the process of multimedia application main application is the making of courseware, the courseware manufacture process, stick to moderate principle is that the teachers need to pay attention to the problem. Teachers should understand, coursewares purpose is to improve the level of students learning and learning ability, promote students mathematics study progress. The courseware can add a small amount of video or photos, but to insist on the principle of moderation. In general, a lesson time for 45 minutes, the teacher if you want to insert in the courseware voice plug-in, it must be less than three times; Moderation on images in the novel, can not take students liking very high, recently very popular; In the teaching process, teachers can not rely too much on multimedia, to the appropriate eye contact with students, strengthen the communication with the students emotion.2. To improve students participation in the classroomThe application of multimedia in high school mathematics teaching does not represent the teacher wants to completely replace the traditional blackboard teaching form. In order to mobilize students enthusiasm and participation in class, the teacher can let students in the process of multimedia applications in the drawing board for class participation. To replace the board with the whiteboard, also let the student to carry on the whiteboard exercise, can improve students participation in the classroom, to promote the development of students. Parabolic drawing, for example, teachers can let students draw the parabola according to the questions on a whiteboard. Whiteboard drawing speed faster, dont waste too much time, but also can improve students participation in the classroom.3. To strengthen the awareness of studentsMultimedia teaching need teachers in the teaching process to strengthen the awareness of students, prevent the students in the classroom learning is not serious or desertion, the students learning , of course, the students in the classroom is also likely to be overly dependent on the