Large-unit teaching mode is a large-unit research-oriented teaching mode, which revolves around the task of authentic learning, aims at deepening the understanding of the big concepts of the subject, and advances according to the logic of the subject research process, and consists of small units with different learning activities in each link. Large-unit teaching usually takes 6- 10 as a large unit, and every 1-3 as a small unit for teaching.

In the teaching activities, we should guide students to study deeply step by step, design teaching activities that intuitively convey the class type, and determine the situational theme, real learning tasks, basic problems, secondary problems and unit design ideas. First of all, starting from the real life situation, it leads to the theme of cultural shirt design. Technically, with the help of reverse instructional design, the customer needs are analyzed first, and then the problems are solved through design.

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Through pictures, recordings, videos and other available elements, we can enter the specific situation, understand the concept of cultural shirts, analyze the design elements of cultural shirts, and inspire students' creative thinking.

In the creative process, individual learning and group cooperation are combined to cultivate students' ability of independent learning and cooperative learning, encourage and affirm creative works, and let students gain self-confidence. In the final demonstration and evaluation, students can find their own advantages and disadvantages in practice and improve them.