From "What" to "Why"——First Classroom Teaching Method for "Dialectics of Nature"

What is Dialectics of Nature? and Why must engineering students learn Dialectics of Nature well? are the two most important questions that should be explained in the first classroom of Dialectics of Nature,which is of important basic and even decisive effect for cultivating students' subjectivity self-awareness of Dialectics of Nature and the success in the later teaching of Dialectics of Nature.