Ndruru YF, Jamaluddin J, Simamora RJ, Harianja EJG. Logic Test Educational Game for Children Based on Multimedia . JoCoSiR [Internet]. 2024 Jan. 30 [cited 2024 Oct. 28];2(1):32-7. Available from: http://journal.aptikomsumut.org/index.php/jocosir/article/view/21