Validity of student's misconceptions diagnosis on chapter Kinetic Theory of Gases using three-tier diagnostic test

Abstract

In the learning process, students still have misconceptions although the concept has been taught by the teacher. One of the causes of misconceptions comes from the students themselves. The teacher often does not know that students have misconceptions because the assessment that has been given does not review the cause of misconception that occurs in students. Students have misconception especially in Abstract concept like in chapter Kinetic Theory of Gases. Because of that, this study made three tier diagnostic instrument test to diagnose student's misconception in chapter Kinetic Theory of Gases. Moreover, it is also done an analysis in order to know the quality of instrument that has been made. According to the trials, the percentage of average internal validity is about 84.6% which means it is in proper to use and the reliability of instrument is 0.752, meaning reliable to use. This instrument used to diagnose the students' misconceptions on chapter Kinetic Theory of Gases.