After the experiments, students had the opportunity to present and share their findings regarding the average particle size and percentage of copper removal with each other. They were also prompted to explain their hypotheses. Subsequently, students participated in a session to address brief post-220 laboratory questions. These questions encompassed the differences between adsorption and absorption phenomena, encountered challenges during the experiments, the solutions they implemented to overcome these challenges, areas for improvement, their opinions on the activity, and any curious statements or questions for future experiments. Additionally, students were encouraged to compile a list of their own inquiries and propose variables for investigation in future laboratory sessions.