Upaya Meningkatkan Aktivitas Dan Prestasi Belajar Siswa Pada Bidang Studi Biologi Melalui Penerapan Metode Pembelajaran Kooperatif Tipe STAD: Efforts to Increase Student Learning Activities and Achievements in the Field of Biological Studies through the Implementation of the STAD Type Cooperative Learning Method. Biodik 2019, 5, 121-130.