Shatnawi , M. and Al-Saeedin, M. 2021. The Effectiveness of Using an Educational Tool (3D GYM‎‏) on the Level of Performance and Retention of Learning Some Ground Movements in Gymnastics Among the Students of the Basic Stage in Aqaba Directorate of Education. Palestine Technical University Research Journal. 9, 3 (Sep. 2021), 97–84. DOI:https://doi.org/10.53671/pturj.v9i3.166.