Tshering S. The Impact of Using Understanding by Design (UbD) Model on Class 10 Student’s Achievement in Chemistry. Int. J. Chem. Educ. Res. [Internet]. 2022 Apr. 20 [cited 2024 Nov. 13];6(1):29-33. Available from: https://journal.uii.ac.id/IJCER/article/view/20866