JUMIATI S, DEWI NR. DEVELOPING TEACHING MEDIA THROUGH POWTOON AS œTPACK (TECHNOLOGICAL PEDAGOGICAL CONTENT KNOWLEDGE) FOR SPEAKING SKILL AT GRADE 8 STUDENTS OF SMPN 2 BANGUN PURBA. Linguistica [Internet]. 2023 Feb. 1 [cited 2025 Jun. 9];12(1):51-7. Available from: https://jurnal.unimed.ac.id/2012/index.php/jalu/article/view/43168