THE EFFECTIVENESS OF TRAINER KIT IN ADVANCED ELECTRONICS LEARNING TO DEVELOP COGNITIVE ABILITIES: A SYSTEMATIC LITERATURE REVIEW. psej [Internet]. 2026 Jan. 28 [cited 2026 Feb. 1];5(3). Available from: https://e-journal.lp2m.uinjambi.ac.id/ojp/index.php/psej/article/view/3751