The main content of the fifth unit of the third grade mathematics book published by Beijing Normal University is fun in mathematics. In this unit, we mainly have three classes: little designer, we go to the garden together and interesting reasoning. In the first lesson, the learning goal of small designers: 1. Through the collection and appreciation of passenger flow signs, we can understand the difference between countermeasures and asymmetry, and further understand the characteristics of axisymmetric graphics. 2. Students' spatial imagination can be developed and their innovative consciousness and aesthetic significance can be cultivated through the mathematical activities of designing signs. 3. We can get positive emotional experience in logo design and the close relationship between mathematics and artistic life.

This class is a comprehensive practical activity class of mathematics, and its content is to design an art festival. Students need to observe signs and signs carefully, and experience symmetrical and asymmetrical features through hands-on operation.

The logo of the first art festival clearly put forward the requirements of this design. First, it should give a name to the symbol of the art festival; Second, we should embody a theme; Third, it can be all or part of an axisymmetric figure. For the design requirements, the teacher can give necessary guidance, and the name can be freely chosen, just like singing with heart and riding on the wings of art, but the theme should be closely related to the art festival, and all or part of the graphics should reflect the characteristics of symmetrical graphics, which can be drawn with colored pencils or filled directly with paper-cuts. In the grid diagram given in the textbook.

Finally, the children were given homework, and they were asked to design logo in one class. The content of logo revolves around the establishment of a basketball team in the sports recess competition held in May this year. Please design a logo for this basketball team. Logo should reflect the time of the game in May 2022, the content is basketball practice, and it should reflect the spirit of the basketball team!