Sharma S, Yadav S, Rath K, Niwas R, Horo A, Pratap R. An Investigation into the Conceptual Understanding of Students in the Light of Thinking Skills Approach. TPT. 2015;40(1):p.88-98. Accessed August 18, 2025. http://14.139.250.109/index.php/tpt/article/view/1205