KTG-SESC: Development of scientific explanation skills test instrument

Abstract

A scientific explanation is one of the main goals in science learning, including physics. But, nowadays it is still rare that instruments can to develop the scientific explanation skills, so it requires specific test to measure it. This research aims to develop scientific explanation skills test instrument on kinetic theory of gases material named KTG-SESC (Kinetic Theory of Gasses-Scientific Explanation Skills Checker). The test instrument was prepared based on the adaptation and modification of Chaimala's scientific explanation skills test. The method used is a method of research and development of instructional models 4D (define, design, develop and disseminate) is constrained only to a point 3D (define, design and develop). Question was developed as many as six questions in the form of essays that allow students to provide scientific explanations freely. So that, can be seen categories of students explain scientifically through the answer. Based on the trial, scientific explanation instruments have been high category reliability and good validity. Through the define, design and develop stage, a scientific explanation skills test instrument for high school students has been developed in the kinetic theory of gasses based instrument of SESC test by Chaimala.