Introduction: The results of international research evaluating academic achievement, which studies the process of teaching experimental sciences, have shown that Iran’s rank is lower than average results. Therefore, the special attention to the course of experimental sciences is the essential and obvious need. In this regard, the purpose of this study was to investigate the effect of teaching experimental sciences based on constructivist approach on students' cooperative learning and its sustainability over time.

Methods The design of this research was quasi-experimental with pre-test-post-test design with control group and follow-up stage. Statistical population of this survey included all the secondary school students of Tehran in 2019.

 A sample of 60 students was selected by using the random sampling techniques in accordance with Cochran formula, and a cooperative learning questionnaire was applied in order to collect data. Constructivist teaching applications have been conducted by treatment group for 10 one-hour sessions. The data has been analyzed by using both descriptive and inferential statistical analysis techniques (repeated measures designs (ANOVA) and paired sample test).