Indonesia Conference Directory

The discussion of the celestial objects coordinates in astronomy requires prior knowledge and scientific reasoning to understand the concept of the celestial sphere. Students often have difficulty remembering the visualization of the celestial objects delivered through lectures in class. This initial study was carried out through observing the quality of student presentations in the class as the assignment product given by the lecturer. Small group discussion design is needed to understand students knowledge about the content of celestial objects coordinates and student understanding. The method of this research is the pre-experimental design in the form of a group of pretest-posttest designs consisting of 32 physics education students divided into 8 group learning community. The discussion video increases the scientific ability of students on the ability to explain the content and investigation of the concept of celestial object coordinates significant improvements in the quality of presentations are proven in the systematic presentation and presentation content delivered. The quality presentations requires an adequate source of material investigation and prior knowledge of the scientific conception of the celestial objects coordinates.