EFEKTIVITAS BAHAN AJAR E-MODUL INTERAKTIF BERBASIS ANDROID UNTUK PENINGKATAN PEMAHAMAN KONSEP LINGKARAN KELAS VI SD: Effectiveness Of Android-Based Interactive E-Module Teaching Materials To Increase Understanding Of The Concept Of Circles In The Fourth Grade Of Elementary School. Fenomena, [S. l.], v. 20, n. 2, p. 219–232, 2021. DOI: 10.35719/fenomena.v20i2.61. Disponível em: https://fenomena.uinkhas.ac.id/index.php/fenomena/article/view/61. Acesso em: 3 feb. 2025.