Tasman, Fridgo. “IMPROVING PAYAKUMBUH ELEMENTARY TEACHERS’ ABILITY IN DESIGNING MATHEMATICAL HIGHER ORDER THINKING SKILLS PROBLEMS”. Pelita Eksakta 2, no. 1 (July 5, 2019): 59-64. Accessed May 18, 2024. http://pelitaeksakta.ppj.unp.ac.id/index.php/pelitaeksakta/article/view/61.