Eighth dash grade students are randomly divided into two groups. one group is taught math usingeighth-grade students are randomly divided into two groups. one group is taught math using traditional techniques. the other is taught math using a reform method. after 1 year comma eachtraditional techniques. the other is taught math using a reform method. after 1 year, each group is given an achievement test to compare its proficiency with that of the other group. group is given an achievement test to compare its proficiency with that of the other group.

The study is an experiment in light of the fact that the scientists control one variable to decide the impact on another.  

An experiment is an investigation intended to contrast advantages of an intervention and standard medications, or no treatment, for example, another medication treatment or aversion program, or to indicate circumstances and end results. This sort of study is performed tentatively. Subjects are chosen from an examination populace, doled out to the different investigation gatherings, and observed after some time to decide the results that happen and are created by the new medication treatment, treatment, or intercession.

well 1 they have there leader that controls them