Empirical Analysis of PowerPoint Projector Use on Secondary School Performance in Physics and Chemistry in Malawi: Analisis Empiris Penggunaan Proyektor PowerPoint terhadap Performa Siswa Sekolah Menengah pada Mata Pelajaran Fisika dan Kimia di Malawi. SPW [Internet]. 2026 Feb. 12 [cited 2026 Oct. 9];2(1):69-88. Available from: https://pub.siradjournal.com/index.php/sirad/article/view/105