EFFORTS TO IMPROVE WRITTEN COMMUNICATION SKILLS AND STUDENTS’ SCIENTIFIC ATTITUDES BY USING THE DISCOVERY LEARNING LEARNING MODEL AT AL-HASAN MADANI ISLAMIC BOARDING SCHOOL RIAU. SPEKTRA [Internet]. 2026 Jan. 6 [cited 2026 May 28];11(2):376-88. Available from: https://ojs.unsiq.ac.id/index.php/spektra/article/view/10325