Yudha, Rivo Panji, and Teguh Samudra Hetharia. “Analysis of the Validity of the Instrument for Early Childhood Numeracy Literacy Assessment”. Journal of Scientific Research, Education, and Technology (JSRET) 4, no. 1 (March 5, 2025): 368–377. Accessed May 26, 2026. https://jsret.knpub.com/index.php/jrest/article/view/685.