PUBLISHER, Publisher. An Evaluation of the Type of Exercises Used by Chemistry Teachers in Kenyan Secondary Schools . African Journal of Education,Science and Technology (AJEST), [S. l.], v. 2, n. 4, p. Pg 226–233, 2015. Disponível em: http://ajest.org/index.php/ajest/article/view/612. Acesso em: 3 apr. 2026.