ANALISIS PENINGKATAN KEMAMPUAN PEMAHAMAN KONSEPTUAL MATEMATIS SISWA SMP MELALUI PENERAPAN PENDEKATAN RIGOROUS MATHEMATICAL THINKING. Abacus: Acad. J. Math. Learn. Educ. 2022, 3 (1), 72-86. https://doi.org/10.59605/abacus.v3i1.304.