It is almost unbelievable that only 118 elements make up everything in the universe. And the 118 elements are structured in such an orderly fashion that they are made stepwise from the simplest elements by adding more protons and neutrons and orbits of electrons. That really is the beauty and mystery of the vast universe. How the Periodic Table of elements was developed and expanded is truly a fascinating story of science and human ingenuity. There is certainly much to be learned from the history of science. Periodic Table is a wonderful tool of physics and chemistry. Indeed, it should be taught early in primary school classes to arouse the young pupils' curiosity and amazement at our understanding of our world.