Study aim: Determining the effectiveness of cooperative soccer on students' intrinsic motivation, teamwork, and fundamental motor skills Design: This study is a randomized, double-blind, parallel-group trial conducted on 30 sixth-grade students (15 in each group) in Qale-Tel city. The sample allocation is done by simple random method using the RAND function in Excel software; first, each participant receives an identification code and is sorted based on the generated random number, then the individuals are divided into two groups of 15. Settings and conduct: This study will use a field experimental research method and a large-scale pre-test and post-test design. This study will be conducted in Qala-Tel city. All participants, intervention instructors, and evaluators who interpret the data will be unaware of the allocation method, and all information will remain confidential, and a code or abbreviation will be assigned to each participant. Participants/Inclusion and exclusion criteria: Inclusion Criteria Must be at least 12 and at most 13 years of age. Must be a sixth-grade student. The students and their parents must consent to participate in the study. Exclusion Criteria Having a physical illness that interferes with the treatment process. Taking psychiatric medications. Intervention groups: Intervention group: The collaborative soccer intervention is implemented in 8 90-minute sessions, one session per week, as a group for the experimental group. Control group: They do not receive any intervention. Main outcome variables: Intrinsic motivation; teamwork; fundamental motor skills.