Development of Android-Based Virtual Laboratory to Improve Critical Thinking Ability on Reaction Rate Materials

Abdul Hadi, Muh. Amir Masruhim, Yuli Hartati

Abstract


Virtual laboratories can be used as an alternative to practicum activities in online learning during the COVID-19 pandemic. This study aims to develop an android-based virtual laboratory to improve critical thinking skills on valid, effective, and practical reaction rate materials. The development model used is Research and Development according to Sugiyono with stages namely potential and problems, data collection, product design, design validation, design revision, product testing, product revision, usage trial, product revision, and final product. The respondents of this study were students of class XI-IPA as many as 90 students of SMA Negeri 2 Unggulan Tanah Grogot. Data collection techniques have been used in the form of tests and non-tests, research instruments for pretest and posttest, as well as validation questionnaires and student responses. The data analysis technique used qualitative and quantitative analysis. The results of the analysis show that the validation of the expert team's assessment is an average of 95.98% with very valid criteria, effectiveness based on the results of the analysis of the pretest and posttest scores, the average N-Gain score is 0.77 with high or effective criteria, practicality based on the results of questionnaire analysis The average student response is 94.11% with very practical criteria. Thus the android-based virtual laboratory developed is feasible to improve critical thinking skills and as a medium for learning chemistry class XI-IPA.


Keywords


virtual laboratory; android; critical thinking

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DOI: https://doi.org/10.33258/birci.v5i3.6162

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