PENGARUH PROJECT BASED LEARNING TERHADAP KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA: THE INFLUENCE OF PROJECT BASED LEARNING ON STUDENTS MATHEMATICAL CRITICAL THINKING ABILITY. Abacus: Acad. J. Math. Learn. Educ. [Internet]. 2021 Jun. 15 [cited 2024 May 20];2(01):78-93. Available from: https://jurnal.upg.ac.id/index.php/abacus/article/view/162