The speech analysis and speech synthesis activities in this subunit are open inquiry assignments. In this activities students have to formulate their own research questions.  This type of assignment is generally considered to be the highest level of inquiry-based learning. In these activities student develop many fundamental skills of inquiry-based science education like diagnosing problems, critiquing experiments, planning investigations, searching for information, constructing models, debating with peers, forming coherent arguments.

Afterwards, students should express their understanding in a discussion with their peer students and the teacher, and or share their reports with another group for peer reviewing. In this way, they confront and share their preliminary (group) conclusions with others and come to final conclusions and explanations they construed themselves.

It is expected that they gain a deeper understanding of the phenomena in this approach and will probably remember the “new” knowledge longer through the process of internalization.