First, create situations to stimulate students' interest in learning.
Learning mathematics knowledge in a lively and close-to-life situation is more likely to stimulate students' interest in exploring knowledge and solving problems [2]. The created situation should be closely related to students' daily life, and at the same time, multimedia technologies such as video, audio and pictures should be fully utilized to present problems. Faced with many forms of information presentation, students will show strong curiosity. Once this curiosity develops into learning interest and motivation, they will show a strong thirst for knowledge. In many years of mathematics classroom teaching, I often use modern teaching methods such as multimedia to create situations closely related to real life in combination with students' reality, so that students can study easily and happily, stimulate students' strong desire to explore new knowledge, and achieve the purpose of mobilizing students' interest in learning. For example, in the process of introducing probability, first, use multimedia to play videos that students are interested in, such as shopping mall lottery, sports lottery, shooting competition hit points, etc., and introduce probability learning; Another example is the animation demonstration of the trinity nature of isosceles triangle; Demonstrate the position relationship between the sun and the horizon with multimedia, and introduce the positions of circles and straight lines; This paper introduces Pythagorean theorem by demonstrating the triangle quicksand principle of Pythagorean theorem in multimedia. Using multimedia to demonstrate the picture of Shenzhou 5 rocket rising into the sky, showing the relevant data and formulas of the first cosmic velocity calculation, and introducing the calculation of square root, these scenes are well-informed and lively, which stimulates students' interest in learning mathematics and greatly improves the teaching efficiency.
Secondly, we should break through the difficulties of abstract concept teaching with the help of animation and other technologies.
The main difficulties in mathematics learning are abstract concepts such as theorems, rules, formulas and conclusions. The key to learning mathematical concepts is to let students experience and participate in the formation process. The establishment of these concepts often requires strict logical reasoning. Multimedia technology can transform abstract concepts into familiar images, static knowledge into dynamic images, help students understand concepts more clearly and completely, and achieve the purpose of improving classroom teaching efficiency. For example, in the positional relationship between a circle and a straight line, using multimedia to demonstrate the positional relationship between the sun and the horizon can not only arouse students' learning enthusiasm, but also promote students' active participation in learning, exploring knowledge, hands-on operation and analyzing and solving problems. For another example, when exploring "edges and corners" can't prove that two triangles are similar, use multimedia to display two triangles, and mark the same amount with lines of different colors. Students can easily draw conclusions through observation. For another example, when exploring the law of Y changing with X in the proportional function, we can demonstrate the function image of the proportional function through the geometric sketchpad, and observe the position of the image by arbitrarily taking different values of k; Given any point on the image, measure the coordinates of the point; Drag this point to change its position, and observe the change of abscissa and ordinate of this point; Guide students to explore, discuss and summarize the nature of proportional function. Through the demonstration of geometry sketchpad, students can not only observe, explore and discover the quantitative relationship and structural relationship between variables in the dynamic process, but also help students to rise from perceptual knowledge to rational knowledge, change abstraction into intuition, and make "number" and "shape" perfectly combined.