Link: https://www.desmos.com/calculator/epp2ggdbur

In the process of making this picture, I met the difficulty of making snowflakes. I asked those students who knew functions better than me, and they helped me solve this problem together. In addition, I also got some help in the function diagram of desmos. I like making desmos picture very much, because it can help me better understand the function graph, for example, the definition domain and value domain of the function can be well reflected in the picture, which also makes me better understand how to use the value range.