Tampubolon, T. and Simanungkalit, K.E. 2026. Batak Toba Local Wisdom as a Conceptual Bridge in Primary Mathematics Instruction: A Systematic Literature Review. Journal of Mathematics Instruction, Social Research and Opinion. 5, 2 (May 2026), 1481–1500. DOI:https://doi.org/10.58421/misro.v5i2.1345.