This is the core element of the experimentation and can be realized in the school classroom or lab, using remote or virtual labs.

Explain the use of the labs to the students, and provide access to any accompanying user support materials through the "Readings and Assignments" box. The selected lab must provide students with an opportunity to collect evidence addressing the scientific questions posed in the previous stages through direct or indirect observation phenomena. Provide guidance as to the organization and managing the activity most effectively and efficiently. If you haven't done so earlier, it is recommended to introduce at this stage group work. Divide students in groups, each of which will formulate and evaluate explanations to the scientific questions based on the collected evidence. 

 Here the students will write the class report.