1. OECD, PISA 2015 Result in Focus, (2018).
2. E. A. I. and L. S. Murdoko, Unnes Physics Education Journal (UPEJ), (2017).
3. K. Havlicek, WDS'15 Proceedings of Contributed Papers, pp. 144–148 (2015).
4. S. Supasorn, Procedia-Social and Behavioral Sciences, pp. 1190–1194 (2015).
5. THE DEVELOPMENT OF BIOLOGY PRACTICUM LEARNING BASED ON VEE DIAGRAM FOR REDUCING STUDENT COGNITIVE LOAD