In this paper we propose a hypothesis about how different uses of maintaining
dragging, either as a physical tool in a dynamic geometry environment or as a
psychological tool for generating conjectures can influence subsequent
processes of proving. Through two examples we support the hypothesis that using
maintaining dragging as a physical tool may foster cognitive rupture between
the conjecturing phase and the proof, while using it as a psychological tool
may foster cognitive unity between them.Comment: Research report at the 40th PME conference, Hungar