Fitriani, A.D., Br Ginting, L.C. and Prabawa, H.W. 2026. From Learning Obstacles to Conceptual Understanding: Developing GeoGebra-Assisted Teaching Materials for Elementary Fractions through Educational Design Research. Journal of Mathematics Instruction, Social Research and Opinion. 5, 3 (Sep. 2026), 2243–2256. DOI:https://doi.org/10.58421/misro.v5i3.1502.