Advantages of computer-aided teaching in mathematics teaching

Robert Canil, an American educator, regards the application of various teaching media as an integral part of motivating learners in learning situations, that is, teaching and learning. There are many kinds of teaching media, each of which has its own functions, characteristics and limitations, and the limitations of one media can often be supplemented by the advantages of other media. Among many media, I think computers have the most advantages. In mathematics classroom teaching, information such as words, images, sounds and animations are processed by computers. Form a multimedia teaching system integrating sound, image, picture and text, and carry out visual teaching in various ways, which not only stimulates students' interest in learning, but also helps students understand and master the content of mathematics teaching, making up for the shortcomings of traditional teaching methods in intuition, three-dimensional sense and dynamic sense. Therefore, in mathematics teaching, teachers should combine the characteristics of mathematics subjects and primary school students, give full play to the advantages of computer-aided teaching, and optimize primary school mathematics classroom teaching. My specific methods in teaching are as follows: First, create situations to stimulate interest. Mr. Lu Xun said: "Learning without interest is tantamount to slavery. Where there is no interest, there is no wisdom and inspiration. " Interest is a positive emotion, and people's emotions are always generated in specific situations. In mathematics teaching, it is easier to stimulate students' interest in learning if they learn mathematics knowledge in lively situations, and multimedia computer system can display beautiful images, beautiful music and interesting animations, which is the best tool to create situations. Therefore, in classroom teaching, using the characteristics of CAI, such as illustrated pictures, synchronized audio and video, and dynamic and intuitive images, to create a good teaching situation can stimulate students' interest in learning to the maximum extent and stimulate their strong desire for learning. 1, create a learning situation. When introducing a new class, we must create a good learning situation to attract students' attention, improve their interest in learning and make psychological preparations for learning new knowledge. Computer-aided teaching, which integrates sound, image and animation, is vivid and has unparalleled advantages in attracting students' attention and interest in learning. For example, when teaching "Axisymmetric Graphics", at the beginning of the new class, I used the computer to show pictures of buildings, graphics and flowers with various axisymmetric graphics, which made students feel the beauty and universality of axisymmetric graphics from the beginning, deeply attracted students' attention and stimulated their curiosity. 2. Create a problem situation, "Learning begins with asking questions." Problems are the core of mathematics, and good questions help to stimulate students' interest in learning and desire to explore knowledge. The acquisition of mathematical knowledge and the improvement of mathematical ability are realized in the process of solving problems, so it is very important to create a good problem situation in the classroom. For example, when teaching "encounter problems", first demonstrate the movement process of two cars with the help of computers, and then ask: "Who can talk about the movement of cars from the picture just now?" Because of the intuitive and dynamic demonstration, students will soon say the key word of the encounter problem "two places, at the same time, facing each other, meeting". It is because of intuitive perception that it is not difficult for students to answer the questions they encounter. 3. Create an application scenario. Mathematics is a highly applied subject, and the syllabus clearly stipulates that students should "learn to use what they have learned to solve simple practical problems". However, due to the limitation of space and time, conventional teaching can not effectively create more practical problem situations, which limits the development of students' ability to apply knowledge to solve practical problems. Computer teaching media has its advantages in this respect and can create rich virtual application situations. For example, when teaching "the surface area of a cuboid", I first show all kinds of cabinets, and then ask, "If the teacher asked you to help design a wardrobe, how would you design it?" When the students report, the teacher will use the computer to demonstrate. For another example, after teaching the understanding of "yuan, jiao and fen", students can use computers to create "virtual stores", so that they can be salespeople or consumers, conduct simulation exercises and simulate shopping. Because the computer demonstration has the function of "recovery", this kind of exercise can be repeated continuously, which enhances the effect of the exercise. Using computer teaching media to create application situations can effectively guide students' thinking into the virtual reality world, and cultivate students' application ability through thinking methods and strategies and imagining actual operations. 4. Create life situations. Knowledge comes from life, and there is mathematical knowledge everywhere in life. It is the most direct and effective way for students to acquire knowledge by letting them look for mathematical knowledge in their lives. However, we can't bring classroom teaching into life. We can only create virtual life situations in the classroom with the help of computers, so that students can feel immersive. For example, when teaching the knowledge of "hectares and square kilometers", in order to let students correctly establish the spatial concept of two large-area units, I showed many scenes that students experienced personally in class, such as visiting Martyrs Park and Orange State Park, having a meeting in the school auditorium, doing exercises in the playground and taking classes in the classroom. Let them feel the size of hectares and square kilometers, and at the same time let them understand that life contains rich knowledge, which can only be excavated by people who are good at discovering and thinking. Second, show the process and expand thinking "Mathematics is the gymnastics of thinking". The process of mathematics teaching is not only the process of knowledge dissemination, but also the process of ability training. The core of modern educational thought is to emphasize the cultivation of students' thinking ability.

Supplementary by Respondent 2009-04-22 08:55

1. Demonstrate the process and cultivate the ability of logical thinking. The characteristics of primary school students' thinking are: from concrete image thinking to abstract logical thinking, and this abstract logical thinking also has strong concrete image. Using multimedia technology can vividly reproduce the process of knowledge generation and formation, as well as the learning process and thinking process of students seeking knowledge, show this process to students and promote the development of students' logical thinking ability. For example, when teaching "circle area formula", it is necessary to convert the circle into other graphics to derive the circle area formula. In the past, it was difficult to complete "curve straightening" well, whether it was the demonstration of teachers using teaching AIDS or the operation of students making learning tools. However, with computer-aided teaching, the equal fraction of a circle can be increased many times from the original teaching aid or learning tool to infinity. The division process is concrete, vivid and clear, and it can be made not only into a rectangle, but also into a triangle or trapezoid for deduction. In this way, through the computer process display, the cognitive process of "turning from bend to straight" is well solved, students' logical thinking and reasoning ability are cultivated, and extreme thoughts are smoothly infiltrated. 2. Expand time and space, and cultivate students' divergent thinking and spatial imagination. Computer technology can also intuitively simulate the thinking world, reproduce the thinking process, promote students' multi-directional thinking and divergent thinking, and cultivate students' spatial imagination and creativity. For example, when learning "parallel lines", use animation to demonstrate that two parallel lines extend infinitely to both ends until the end point, so that students can intuitively exert their imagination and understand the meaning of "never intersect". This makes up for the deficiency that traditional teaching is difficult to explain clearly, enables students to break through the limitations of reality, can expand imagination and divergent thinking in their minds, not only establishes the concept of space, improves the ability of spatial imagination, but also permeates "infinite" thinking, and at the same time, dynamic demonstration can make students' memories deeper and firmer. Supplementary by Respondent 2009-04-22 08:55

Third, use dynamics to improve skills 1, simulate demonstrations, and improve students' hands-on operation ability. Simulating the operation by computer is more vivid than the teacher's demonstration in other ways. Combining it with students' actual operation can help students master the operation method correctly and form operation skills, which can get twice the result with half the effort. For example, when teaching "angle measurement", the protractor should be displayed on the screen, and then the structure and usage of the protractor should be introduced by flashing, coloring and moving. Then display the movable angle and learn to look at the degree on the protractor; Finally, guide students to learn to measure and draw angles. This teaching can enable students to master the use of measuring tools effectively, overcome the difficulties in use and improve their practical operation ability. 2. Increase capacity and improve students' practical skills. All teachers have this experience: in order to save the time of writing on the blackboard in class, prepare a lot of notes before class and write down the contents on the blackboard one by one; In order to increase the amount of classroom exercises, all kinds of exercises are copied on the blackboard. Make the phenomenon of "stickers everywhere and blackboards everywhere" appear in the classroom. What is the diameter of a circle? In the teaching of problems such as the derivation of the formula for calculating the circular area, the effect of "infinite increase" cannot be fully displayed, which leads to insufficient information for students and is difficult to accept. CAI's intervention in classroom teaching has solved this problem well. Because multimedia technology is "dynamic", it transmits a large amount of information, with high speed and strong interactivity, which makes high-density and large-capacity training and information exchange possible. In this way, teachers can carefully organize students' learning activities in class and optimize teachers' teaching and students' learning. In a word, computer-aided mathematics teaching has its unique advantages, vivid image, both sound and shape, and attracts students. However, the first principle of choosing media is that the media should obey the teaching objectives and choose the right time to intervene. Only when it is used at the right time can the best effect be obtained. Although computer-aided teaching has many advantages, it can not completely replace the traditional teaching methods, so students' independent thinking and teachers' leading role in teaching can not be ignored. Teachers' language, expression, posture and blackboard writing are always the most active factors connecting teaching media. In teaching, teachers should use the timely assistance of multimedia technology to create rich situations, give full play to the best effect, stimulate students to learn actively, acquire knowledge and continuously improve their learning ability.