将纸张转化为教授白板图解

请将这张纸转换成教授白板的图片。用图表、箭头、方框和说明文字，以可视化的方式解释核心概念。也可以使用颜色。

Take this paper and transform in the image of a professor whiteboard image. diagrams, arrows, boxes and captions explaining the core idea visually. Use colors as well