1.Bhagat, Kaushal, Kumar and Chang, Chun, Yen. 2015. Incorporating Geogebra into Geometry Learning – A lesson from India. Eurasia Journal of Mathematics, Science and Technology Education, 11(1): 77-86.

2.Chandra, Kundu, Soumen. 2018. Attitude of Secondary Level Students towards Geometry. International Journal of Research and Analytical review, 5(3).

3.Chandrashekar, C. 2007. Teaching of Geometry at Secondary Level. Edutraks, 6(10).

4.Keith, Jones and Marianna, Tzekaki. 2016. Teaching and Learning of Geometry. The Second Handbook of Research on the Psychology of Mathematics Education, pp. 109- 149. Retrieved from https://www.researchgate.net/ publication/305635480_Research_on_the_teaching_and_ learning_of_geometry on 27-08-2020

5.Kothari, R.G. and Patel, Rachana, N. (2009). Diagnosis and Remediation of Learning Difficulties in Geometry of Standard Eight Students. Thesis submitted to The Maharaja Sayajirao University of Baroda. Retrieved from http://hdl. handle.net/10603/58606 on 28-08-2020

6.Suvarna, Mamata. 2011. Effectiveness of the Use of Worksheets on developing the Skill of using Geometrical Instruments among the Students of Standard Eight of Mangaluru Taluk. Unpublished Dissertation submitted to Mangalore University.