In this proposal for teacher’s professional development from a revision of some studies regarding the social character of learning, along with development of historic –epistemological concepts, it is explored the relation between geometrical and arithmetical progressions and it is extended an invitation of learning addressed to Precalculus teachers. This one has intertwined a laboratory environment, making use of sensors and apps, in the analysis of logarithmic musical scale cases and in the pH. It is used the content analysis methodology with the purpose of sketching some ways with regarding to the question: In which ways the Precalculus university teachers are able to approach to the comprehension and characterization of the logarithmic funtions?