Majidah, Annisa Putri, and Leni Marlena. 2021. “THE EFFECT OF ONLINE LEARNING AND DIRECT FACE-TO-FACE TO MATHEMATICS LEARNING ACHIEVEMENT”. Kalamatika: Jurnal Pendidikan Matematika 6 (2), 157-70. https://doi.org/10.22236/KALAMATIKA.vol6no2.2021pp157-170.