This study was aimed to know the effect of using virtual labs to understanding of the concept of students on the reaction rate material. Understanding the concept included into the dimension of cognitive processes. This research was conducted in SMA Negeri 86 Jakarta in the first semester of the school year 2016/2017. The method used is a quasi- experimental design with a design pretest - posttest control group design. Sampling was done by using purposive sampling technique. Samples were students of class XI MIA 2 as the experimental group learning using virtual labs and students of class XI MIA 1 as the control group using conventional learning. Samples in each group berumlah 29 people. Data were collected using test students' understanding of the concept description. Data analysis used independent sample T-test obtained t of 3.021 to 2.045 ttabel means thitung> ttable and significant value 0.004 <0.05. Hence Ho refused and H1 accepted at significant level of 0.05 thus concluded that there are significant differences between the average value posttest experimental group and the control group. This shows there is the effect of using virtual labs to students' understanding of the concept.
Hikmah, N., Saridewi, N., & Agung, S. (2017). Penerapan Laboratorium Virtual untuk Meningkatkan Pemahaman Konsep Siswa. EduChemia (Jurnal Kimia Dan Pendidikan), 2(2), 186. https://doi.org/10.30870/educhemia.v2i2.1608