NJOKU, C.; OKIGBO, E. C. Development and Validation of Geo-TAN Instructional Software Package for Teaching Geometry in Senior Secondary School. UNIZIK Journal of STM Education, [S. l.], v. 3, n. 2, p. 14–28, 2020. Disponível em: https://journals.unizik.edu.ng/index.php/jstme/article/view/503. Acesso em: 23 oct. 2021.