[1]
Maqfiroh, S.L. and Munahefi, D.N. 2022. Development of Teaching Materials of Flat Side Spaces Building Based on Problem Based Learning with Assemblr Assistance to Improve Students’ Spatial Ability. Unnes Journal of Mathematics Education. 11, 3 (Nov. 2022), 228-238. DOI:https://doi.org/10.15294/ujme.v11i3.60568.