First, it can develop exploratory questions, stimulate creative thinking and achieve the purpose of ability.
By using information technology and scientific teaching methods, inspiring questions are created, so that students can actively discover and explore by doing "mathematical experiments", and the combination of intuitive thinking and sequential logical thinking is truly realized, which not only trains students' logical thinking ability, spatial imagination ability and mathematical operation ability, but also cultivates their divergent thinking and creative thinking ability, which is of great significance to cultivating students' innovative spirit and cooperative consciousness. For example, what figure is formed by connecting the midpoints of a rectangle in turn? With the support of the geometric sketchpad, a dynamic rectangle is given on the screen, so that the rectangle connected by the midpoint of each side is constantly changing. In this case, we can provide students with exploration space. Under what circumstances will the midpoint quadrangle be a parallelogram, a rectangle, a diamond or a square?
Second, scenarios can be created to fully mobilize students' enthusiasm for learning mathematics.
In mathematics teaching, the use of multimedia technology can create colorful teaching situations for students, increase questions and skillfully set suspense, so that students can observe, experiment and think more actively, which is conducive to giving full play to students' dominant position in learning, stimulating students' thirst for knowledge, fully mobilizing students' enthusiasm for learning, and making students change from passive acceptance of knowledge to active learning. Make the goal clearer in students' minds. For example, in the teaching of "the sum of the internal angles of polygons", I started with the sum of the internal angles of triangles, and converted it into the sum of the internal angles of two triangles when finding the sum of the internal angles of a quadrilateral (computer graphic demonstration: a diagonal drawn from a vertex of a quadrilateral divides a quadrilateral into two triangles), and then asked how to find the sum of the internal angles of a pentagon. This can inspire students to review and further think about the solution of the sum of the internal angles of quadrilateral. We can know that the Pentagon is divided into three triangles in the same way. What about hexagon and heptagon? Proper questioning and demonstration can encourage students to think positively and stimulate their desire to explore new knowledge. This lays a solid foundation for the proof of the internal angle and internal angle formula of N polygon. Quickly achieve the goal of students mastering this knowledge point.
Third, we can break through the key and difficult points of teaching and better accomplish the task of target teaching.
The teaching content of mathematics is abstract, and some contents are difficult for students to master, which makes teaching difficult. The focus of teaching is what we ask students to master in the teaching process. Traditional teaching methods have some limitations in some teaching emphases and difficulties. Computer-aided mathematics teaching into the classroom can make abstract concepts concrete and visual, especially the computer can demonstrate dynamically, which makes up for the shortcomings of traditional teaching methods in intuition, three-dimensional sense and dynamic sense. Using this feature, we can deal with the problems that other teaching methods are difficult to deal with, arouse students' interest, thus enhance students' intuitive impression, and provide a way for teachers to solve teaching difficulties, break through teaching priorities, improve classroom efficiency and teaching effect, and better complete this lesson.
For example, when talking about "translation and rotation", if traditional teaching methods are used, strokes will be demonstrated with teaching AIDS, so it is difficult to clearly explain the relationship between the translated and rotated image and the original image, and it is difficult for students to master it. In teaching, I use slides to keep the movement process and results of images after translation and rotation on the screen, so that students can clearly observe the movement and change process of graphics, enrich and strengthen students' imagination and thinking ability, and better achieve the purpose of mastering knowledge.
Fourth, promote the further implementation of hierarchical target teaching.
Hierarchical target teaching is a teaching that divides students into several levels and sets goals respectively according to their basic knowledge and cognitive level. The level of students in the class is uneven, and hierarchical target teaching has always been a beautiful ideal that is difficult to achieve. Now it can be realized by using modern information technology. For example, using the hyperlink function of powerpoint or the branch, function and interactive function of authorware to realize the hierarchical teaching of class system, students can choose the learning content and exercises according to their own reality, which not only makes students happy to learn, but also avoids the inferiority complex and superiority of poor students, so that students at all levels can gain something.
In a word, the application of modern information technology has vivid images and both sound and shape, which greatly enriches the teaching methods. The timely and appropriate use of multimedia teaching in mathematics goal teaching can effectively promote the completion of knowledge goal, ability goal and emotional goal, and achieve ideal results.