.3 x 4 whiteboard.Teaching design should be combined with application design, and application design should be subject to instructional design. Application design goals should be consistent with instructional design goals. The first is to consider the subject teaching objectives, subject teaching content, teaching objects, and then design the corresponding teaching strategies. In the design of teaching strategies and the choice of teaching media, according to different disciplines, different teaching objectives (including knowledge domain, competence domain, etc.) and corresponding teaching difficulties, different types of courses, different years, different learning ability and other factors, The interactive whiteboard application is one of the teaching strategies, and according to its characteristics, the teaching, learning methods, steps and links are scientifically and rationally designed to give full play to its functions.