Wijethunga W, Chandrasena W. INVESTIGATION OF STUDENTS’ PSYCHOLOGICAL ASPECTS ON ACITIVITY BASED LEARNING IN MATHEMATICS: A CASE STUDY IN SRI LANKA. Int. J. Res. Granthaalayah [Internet]. 2019 Apr. 30 [cited 2024 May 6];7(4):270-8. Available from: https://www.granthaalayahpublication.org/journals/granthaalayah/article/view/IJRG19_A04_2236