Four Tier Test (FTT) Development in The Form of Virtualization Static Fluid Test (VSFT) using Rasch Model Analysis to Support Learning During the Covid-19 Pandemic

Abstract

This study aims to develop a valid and reliable test instrument. The test instrument developed is a Four Tier Test (FTT) in a Virtual Static Fluid Test (Test) on Static Fluid material using the Rasch model analysis. The method used in this research is the method of research and development with the 4D model. This research produces an educational product in the form of an FTT in the form of VSFT. The items developed in this study amounted to 20 items. The validation results from several experts gave an average score of 88.13% with very good criteria. The CVR value for each item is 1, while the CVI value is 1 with very good criteria. The validation results from several educational practitioners gave an average score of 89.58% with very good criteria. The results of the Rasch Model analysis showed that the test instrument is accepted, the reliability of all the items has good criteria, all the items are valid and divided into three difficulties, also each item is not biased towards gender differences. The results of the analysis of student misconception showed that only 4.68% of the students understood the whole concept, 23.42% of students only understood partially, 58.95% of students have a misconception, and 12.95% of students did not understand the concept at all. The conclusion of this study is that the FTT instrument in the form of VSFT is valid and reliable as an assessment instrument during the Covid-19 period, and also able to analyze student conceptions.