smart board 3000i.If the lack of traditional blackboard teaching is used in information technology courses, and modern multimedia teaching is used, teachers often sit in front of the teacher's machine to teach the content and control the student computer through the multimedia network classroom software, so that students can sit in front of the student machine. . In addition to the students in the practice of students to go to the students to guide, the rest of the time is in the "demo" courseware, classroom teaching has become "electric irrigation, network irrigation", teachers become the projections and lecturers in the classroom, students become Become a recorder, lack of interaction between teachers and students. It is impossible to observe the students' emotional attitudes, and they have no time to take into account the students' understanding and reaction. It is difficult to effectively play the leading role of teachers, and students cannot participate in the classroom. The classroom teaching atmosphere is dull and blunt. Of course, this is not the drawback of multimedia teaching itself, but it is easy to artificially (the teacher itself) in the classroom to cause such "disadvantages".