Tambunan, Y. N. ., Siregar, C., & Situmorang, T. E. (2024). Differences in Learning Outcomes Mathematics Student Using the Jigsaw Method and Contextual Teaching Learning in the Principal Discussion Rectangular Flat Building. International Journal of Educational Research Excellence, 3(1), 101–109. https://doi.org/10.55299/ijere.v3i1.790