Open-ended problems and their problems in the physics laboratory: a dialetic alternative that passes through the multivocal and univocal discourse

This work accomplishes a critical analysis of an investigation proposal for the experimental activities, originated from paper-and-pencil open-ended problems, which has been disseminated in the literature. As alternative, it is proposed an investigation methodology that is sustained not only in the dialogic discursive, but that enhances the role of the univocal speech and the necessary integrality among the several stages of that methodology, in order to reach the pedagogic objective of this methodological proposal.