The Scatchard-Hildebrand equation is one of the core components of the theory of regular solutions and nonelectrolyte solutions. It also links multiple key points of polymer physics such as the cohesion energy

solubility parameters and even the van der Waals equation. Although the derivation of the equation is not necessary and rare in textbooks

students demand more introduction to its origin and development history. Based on such introduction

students may better understand and utilize this equation. In this paper

the development and derivation process of the equation are summarized to assist the teaching. It serves as a supplementary to previous professional derivations

and a vivid introduction from the perspective of its inventors.