Furthermore, all the students successfully tested their hypotheses using Jamovi. One group conducted a statistical comparison to determine whether there was a significant difference between the average particle size (in cm 2 ) before and after the adsorption of Cu 2+ ions. The results are presented in 285 Table at a 5% significance level. Other groups that proposed similar hypotheses reached the same conclusion with a p-value > 0.05. This indicates that there is no significant difference between the average particle sizes of dried fish scales before and after the adsorption of Cu 2+ ions. However, some Some groups sought to confirm the significance of the fish scales in this activity. They observed that 305 the mass of the dried fish scales increased after adsorption. All students suspected that the absorbance of the solutions would differ significantly between those with and without the fish scales. To test this assumption, they compared absorbance data from solutions using fish scale teabags with those using just empty teabags. All parameters were kept similar to previous experiments, including the volume of the solution and mass of the fish scales. Consequently, students were able to statistically prove that the 310 active adsorbing material originated from the fish scales and not from the teabag material (see Table ).