THE INFLUENCE OF TSTS LEARNING MODEL ON MATHEMATIC PROBLEM SOLVING OF CLASS VII SMP BUKIT ZAITUN STUDENTS’ KOTA SORONG. koulutus [Internet]. 2018 Oct. 13 [cited 2024 Nov. 21];1(2):50-7. Available from: https://ejournal.kahuripan.ac.id/index.php/koulutus/article/view/138