Development and Validation of Virtual Test Based Multiple Representations to Assess Students’ Decision-Making Competence of Buffer Solution

Nahadi Nahadi, Harry Firman, Hendri Kurniadi


The purpose of this study is to develop a valid and reliable virtual test based multiple representations to facilitate students to understand the questions that assess students’ decision-making competence of buffer solution. This research was conducted using the method development and validation. Respondents of the study were the 136 high school students who take science class. Data obtained from the results of the validation and reliable test of virtual test that has developed. Data obtained were content validity, reliability, item difficulty index, discrimination index and readability of the test. Beside that, in this study also compared the item difficulty and readability between virtual test and paper and pencil test. The results showed that the virtual test had CVI’s value was 0.71, the Cronbach's Alpha value was 0.925 which was showed that the reliability with included in “very good” category, the item difficulty index was moderate categories and the readability of virtual test was higher than paper and pencil test. It could be concluded that the virtual test that had developed was feasible to use and this virtual test facilitate students in understanding the questions that assess students’ decision-making competence of buffer solution.


Buffer solution; Development; Decision-making competence; Validation; Virtual test



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Journal of Education and Learning (EduLearn)
ISSN: 2089-9823, e-ISSN 2302-9277
Published by: Universitas Ahmad Dahlan (UAD) in collaboration with Institute of Advanced Engineering and Science (IAES)

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