This work highlights the importance of verbal creativity, providing a productive online discourse definition, in which students intertwine convergent and divergent thinking by means of a transactional and controversial dialog. Developing the formulated productive online discourse definition, it is also presented and evaluated, an original scaffolding process designed here to further collaborative knowledge building, during ill-structured problem-solving, focusing on creativity and innovation. Evidence from qualitative online discourse analysis indicated an improvement in the knowledge building processes, and knowledge advancement and deepening after teacher's scaffolding.