TABLE 1.

Sequence of sessions and activities in the educational interventions.

Session	SEM (experimental group)	TM-DI (control group)
1	Theoretical explanation of SEM and Polskie ringo. Delivery of teaching material (folders; match records; reports; game rules; contingency contract, etc.).	Theoretical explanation of Polskie ringo (regulatory aspects).
2–3	Training and organization of teams (choice of thematic names, hymns/emblems, identifying colors, etc.). Designation of rotating responsibility roles. Self-construction of material by student art (e.g., Polskie ringo ring).	Organization of students individually or in pairs (no persistent work groups are formed). Presentation of sports equipment provided by the school. Technical development activities (pass, launch and reception I).
4–7	Warm-up and stretching with modified sports games, directed by the teacher and students (role of physical trainer). Activities (by teams and using rotating roles of responsibility) aimed at learning technical and tactical skills of Polskie ringo (pass, serve, reception, throwing, displacements). Reflective-comprehensive meetings (positive feedback; active listening; learning-error). Knowledge of rules through the real game (fair play = sport key element). Pre-season or training for the championship (educational competition).	Warm-up sessions led by the teacher. Activities to develop technical skills repetitively (pass and reception II). Technical development activities (serve). Technical development activities (throwing). Technical development activities (displacement). Completion with stretching exercises, led by the teacher. Also, the teacher instructs the students for the improvement of the movements developed.
8–14	Friendly team matches and educational competition (fair play) through a formal and regular league (Round Robin). Development of responsibility roles (e.g., referee, journalist, captain…). Use of real sports elements (minutes, interviews, etc.).	Sports warm-up. Tactical development activities 1 vs. 1. Tactical development activities 2 vs. 2. Tactical development activities 3 vs. 3. Simultaneous Polskie ringo games. Final stretching exercises led by the teacher.
15–16	Semi-final and final competition between classes. Event with final festival (organized by the role of committee): delivery of trophies, diplomas and medals (self-built materials). Summative or final evaluation.	Individual theoretical assessment of Polskie ringo (regulatory aspects). Individual practical evaluation of Polskie ringo (technical elements).