D. . J. . Ahmad, “Pedagogy of Science Textbook for B.Ed. (Physical Science) Part 1”, jie, vol. 39, no. 4, pp. p. 160–163, Feb. 2014, Accessed: Feb. 28, 2026. [Online]. Available: http://ejournals.ncert.gov.in/index.php/jie/article/view/1439