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This study aims to determine if this OLabs-based virtual practicum medium effectively increases the understanding of the concept of frictional force material among class X students of Madrasah Aliyah Lita. The type of research used was pre-experimental, using the one-group pretest–posttest design. The research results show that OLabs-based virtual practicum media effectively increase students' conceptual understanding of Madrasah Aliyah Lita. The mean value of the pretest understanding of the concept is 36.66 and the result of the posttest understanding is 73.80. Based on hypothesis testing with t count 20.98 and t table 2.086, it is concluded that Ho is rejected, and Ha is accepted. It shows that OLabs-based virtual practicum media effectively increases students' understanding of physics concepts in class X at Madrasah Aliyah Lita.

Virtual practice media; OLabs; frictional forces