Tasman F. IMPROVING PAYAKUMBUH ELEMENTARY TEACHERS’ ABILITY IN DESIGNING MATHEMATICAL HIGHER ORDER THINKING SKILLS PROBLEMS. pelita [Internet]. 5Jul.2019 [cited 18May2024];2(1):59-4. Available from: http://pelitaeksakta.ppj.unp.ac.id/index.php/pelitaeksakta/article/view/61