Rachmawati, N.L., Angganing, P. and Riyadi, S. 2021. Peningkatan Keaktifan Dan Hasil Belajar Siswa Melalui Model Problem Based Learning . Educatif Journal of Education Research. 4, 3 (Jul. 2021), 1-8. DOI:https://doi.org/10.36654/educatif.v4i3.108.