Syaidah, N., and S. N. Faizah. “DEVELOPING ELECTRONIC STUDENT-BASED PROBLEM WORKSHEET FOR PRIMARY SCHOOL STUDENT”. Al-Bidayah : Jurnal Pendidikan Dasar Islam, vol. 13, no. 2, Dec. 2021, pp. 405-20, doi:10.14421/al-bidayah.v13i2.699.