whiteboard easel amazon.With the development of society and the continuous advancement of science and technology, multimedia teaching is increasingly appearing in our regular teaching. Multimedia courseware is rich in expressiveness and can provide students with rich and sensible materials across time and space. It can create scenes, attract students' attention, increase the visibility and clarity of observation objects, and stimulate students' learning motivation. Therefore, the introduction of new lessons by means of multimedia can achieve unexpected results. For example, when explaining the "sliding rheostat", we can use the courseware to play a song and dance performance with obvious changes in lighting effects for students, so that students can observe the flickering light in the relaxed and pleasant music, and adjust the volume knob to change. Volume, and finally subtitles: Who is playing this magical role here? So it is natural to bring the whole class to the classroom teaching scene. Another example: "In the circuit of the family, the reason why the current is too large?" The introduction of the section, can play the "fire warning" film, students are impressed by a thrilling fire scene. Another example is the study of the application of the magnetic phenomenon. The author first introduces the construction of the Shanghai Maglev train with the principle of interaction between magnetic poles, and introduces its rapidity and safety to the students. When the students listened to the introduction, they were very interested in the maglev train. After class, they continued to ask questions to the author. At this time, the author took the opportunity to give the answers they wanted, but they guided them and taught them what to pass. Methods, ways to access relevant information. A decision was also made to allow interested students to use their spare time to write a small paper on the maglev train. Two weeks later, most of the students handed in his work, and the author wrote each of them. The papers were affirmed, and various awards were also awarded. After that, the author found that students' interest in learning physics became stronger.