Kania, Nia, Yaya S. Kusumah, Jarnawi Afgani Dahlan, Elah Nurlaelah, Ferit Gí¼rbí¼z, and Ebenezer Bonyah. 2024. “Constructing and Providing Content Validity Evidence through the Aiken’s V Index Based on the experts’ Judgments of the Instrument to Measure Mathematical Problem-Solving Skills”. REID (Research and Evaluation in Education) 10 (1):64-79. https://doi.org/10.21831/reid.v10i1.71032.