Abstract:

The speciality of the magic number “three” in language, mathematics, and physics is discussed in general by using many examples. We emphasize the significance of the relationship between three variables. Because it is the foundation for many formulas and models; it helps us to describe and explore our world; it plays an important role for the logical thinking and generating the complex problems as well as cognitive development.

Key words: the beauty of “three”, relationship between three variables, logical thinking