Knowledge and skills, process and method, emotional attitude and values are three dimensions of the new curriculum objectives, not three types. Three dimensions refer to three aspects (sides) of the same thing, just as a cube has three dimensions-length, width and height, so does the curriculum goal: students should learn any knowledge and skills in a certain way, whether it is a good method or a bad method; Everyone has to go through a process, whether it is active exploration or passive acceptance. In this learning process, students are always accompanied by certain emotions and attitudes, whether positive or negative, whether perfunctory or serious; There will always be a certain value orientation, whether it is correct or incorrect. Therefore, the three-dimensional curriculum objectives are three aspects of a problem, not three independent objectives. In classroom teaching, we can't achieve the goal of one dimension before implementing the goal of another dimension. They are related, just like taking a cube. It is impossible to choose only "height" and not "length and width".