Wahyuni, A., Effendi, L. A., Angraini, L. M., & Andrian, D. (2020). Developing instrument to increase students’ geometry ability based on Van Hiele level integrated with Riau Malay culture. Jurnal Penelitian Dan Evaluasi Pendidikan, 24(2), 208–217. https://doi.org/10.21831/pep.v24i2.33811