Investigating the effect of conducting experiments on students' learning in comparing the reactivity of elements in chemistry of the 11th grade of the second year of high school.

The purpose of this research is to "investigate the effect of conducting experiments on the learning of 11th grade high school students in the chemistry course of the field of experimental sciences in Bakharz city." The research has been conducted in a semi-experimental way with two control and experimental groups with pre-test and post-test. The statistical population of the research consisted of 170 female high school students in Bakharz city in the academic year of 1402-1401, of which 30 students were selected as available samples. The measuring tools are the researcher's educational achievement test. The validity of the academic achievement test was checked and confirmed by several experienced chemistry professors and teachers using face and content validity methods. The reliability of the academic achievement test was obtained using spss software with Cronbach's alpha method of 0.75, which indicates the appropriate reliability of the test. After matching, the students were randomly divided into two control and experimental groups based on their previous chemistry grades. The experimental group was trained for 8 weeks (8 sessions of 90 minutes) in the chemistry lesson with the experiment method and the control group with the traditional teaching method. After this period, both groups were tested.