Kalpana Maski. “A Comparative Study Of Learning Gaps In The Cognitive Development Of Learners At The Primary Level Based On NAS 2017 And 2021 In Chhattisgarh”. Educational Administration: Theory and Practice 29, no. 3 (August 30, 2023): 1484–1494. Accessed October 22, 2025. https://kuey.net/index.php/kuey/article/view/9892.