Norhaedah A, MM Rambitan V, VT Lumowa S. A DEVELOPMENT OF PRACTICUM INSTRUCTIONS BASED ON QR CODE : FOR IMPROVING SCIENCE PROCESS SKILLS AND MASTERING BIOLOGICAL CONCEPTS OF CLASS VIII STUDENTS AT PUBLIC MIDDLE SCHOOL 2 SAMARINDA). IJER [Internet]. 2020 Nov. 9 [cited 2024 Nov. 23];7(02):6-12. Available from: https://journal.unj.ac.id/unj/index.php/ijer/article/view/18897