Perbedaan Hasil Belajar Kognitif Siswa Pada Pembelajaran Daring Melalui Google Classroom dan Whatsapp Mesenger Di SMP Negeri 4 Bengkulu Tengah: (Differences in Student Cognitive Learning Outcomes in Online Learning Through Google Classroom and Whatsapp Messenger at SMP Negeri 4 Bengkulu Tengah). BIODIK, v. 7, n. 4, p. 10–17, 13 Dec.2021.