وثامنها: أنحاء التعليم وهي التقسيم، والتحليل، والتحديد، والبرهان
The eighth heading concerns the methods of teaching: division, analysis, definition, and demonstration.
Division displays a universal's classes; analysis resolves a composite matter into its parts or explanatory components; definition determines what a thing is; demonstration establishes a proposition from fitting premises.
These methods complement rather than replace each other. Knowing the kinds of an object does not guarantee knowing its definition or the proof of a claim about it.