This paper describes an experience developed in the initial level (five years), at a school in the city of General Roca, Rio Negro Province, Argentina.Shows progress in learning to children around the theme "Human Body".For the analysis of information were used pictures and discursive interaction of seven activities in natural science classes.The results show that children are able to advance the process of conceptualization, complexity it his ideas about human body parts, how it is formed, the function of bone.