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. SiRad: Pelita Wawasan, [S. l.], v. 2, n. 1, p. 69–88, 2026. DOI: 10.64728/sirad.v2i1.art6. Disponível em: https://pub.siradjournal.com/index.php/sirad/article/view/105. Acesso em: 9 oct. 2026.