Elementary education

...Along this path, I pick tetrahedron as structure and magnet as duality which, in a couple simple moves, gets one analog model that expresses and conveys physical intuition on variable mass density, anharmonic motion and multiple states...etc. A child can develop the physical intuition in an afternoon and associate the terms with the feelings. Ten or twenty years some participants may acquire enough abstract math so as to appreciate the early impression in a different manner. 

"The essential nature of external reality, Comenius thought, could be conveyed by education to the simplest intelligence if all knowledge could be reduced to a basic principle." 

- notion ascribed to John Amos Comenius (1592-1670), circa 1640 [Dobbs, Betty Jo Teeter, THE FOUNDATIONS OF NEWTON'S ALCHEMY, Cambridge University Press, Cambridge 1975 p. 60]