This document details a didactic sequence focuse on the teaching and knowledge of the concept of the black body on the midle education classroom . A knowledge teaching route of the black body concept will be evidenced, designed in a theorical framework that will give all the normative, didactics and phisics aspects, atso a description will be done about the methodology choosen to potenciale on the students the construction of a speciffic knoweledge. The sequence was applied on the school I.E.D. OEA of Kenedy and in Colegio Andres Rosillo in Bosa. the black body, didactic sequence, teaching and knowledge.