Hajizah, M.N. , Hajizah, M.N. , Salsabila, E. , Hadi, I. and Meganingtyas, D.E.W. 2025. The development of didactical tetrahedron design on learning integers to improve algebraic thinking skills. International Journal of Innovative Research and Scientific Studies. 8, 3 (May 2025), 2077–2083. DOI:https://doi.org/10.53894/ijirss.v8i3.6945.