Pendidikan Matematika Unswagati Cirebon kekeliruan yang dialami mahasiswa dengan harapan mahasiswa dapat tuntas baik secara individual ataupun klasikal.
This study aimed to analyze the achievement of critical thinking skills of students through virtual lab assisted learning in preservice teachers of mathematics. The method used is weak experiment with the design of the study "one group pretest-posttest design". The research was conducted on the subject for the static fluid level mathematics preservice teachers university sector in the city of Cirebon academic year 2016/2017. The research subjects consisted of one class with the number of samples respectively of 23 preservice teachers of mathematics. The data obtained in this study is data critical thinking skills that include identifying the relevant issues, defines the subject matter, giving the reasons of the experiment, using a strategy logically, doing the things done tentatively, summarized by considering the situation and then decide, answered questions about the facts, report is based on observations, consider the appropriate procedures, involving a bit of conjecture based on those events -events and report experimental generalization. Research hypothesis testing is done by using the t test on the N-gain critical thinking skills after learning to use the virtual lab. The results of data analysis showed critical thinking skills gain of 0.58 (moderate). From this analysis it can be concluded that learning-based virtual lab for preservice teachers of mathematics can significantly improve the critical thinking skills of preservice teachers of mathematics. Besides, in general, the students give a positive response to learning to use the virtual lab.
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