2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/95253In this article the current understanding of fundamental particles and their interactions is presented for the interested non-specialist, by adopting a semi-historical path. A discussion on the unresolved problems is also presented.10 pages, plain latexPopular PhysicsHigh Energy Physics - PhenomenologyPhysics Educationtext