Under the background of normal professional certification, the practical research on the PAD
class of “Principles of Pedagogy” has appeared, but there is a lack of rationality analysis of the PAD class
model to “Principles of Pedagogy”. In terms of the pursuit of what should be, the PAD class model of
“Principles of Pedagogy” can break the situation that teachers dominate the classroom, promote students
to digest abstract theoretical knowledge, and finally enhance teachers and students to generate scientific
educational thinking, which is theoretical rationality. From the perspective of practical judgment, the
PAD class model of “Principles of Pedagogy” can promote students to participate in classroom discussion
activities to improve their self-comprehensive ability, mobilize students’ learning autonomy to improve
effective learning, and improve students’ educational theory knowledge literacy, which is practical
rationality.