Mathematics teachers, through investigative processes, must be prepared to support, lead,
interfere and, when necessary, build strategies, so that students may understand any mistakes in
their own mathematical and statistical solutions. In this process, teachers should refrain from
influencing students by expressing their opinion about students’ interpretations and
argumentation. Questions should be presented in a way that would provoke students and lead
them to reflect and seek consistent concepts and procedures. The development of investigative
activities requires a particular form of argumentation, which presents challenging questions
related to the learning objectives.