The making of metal coating props oriented chemical representation

Abstract

Abstract The purpose of this research is to produce metal coating props that oriented to chemical representation and find out the results of validation and feasibility of the props that has been made. This research used research and development method with stages of analysis, design and development. Based on the results of this research, the product is obtained in the form of metal coating props with the characteristics of combining macroscopic, submicroscopic and symbolic representations with guidebooks and worksheets. Validation results indicate that the product is valid with the acquisition of the value of rcount on props of 0.93. The results of feasibility tests conducted on 3rd grade of 27 Senior High School Bandung showed that props are very feasible with the percentage of successive value of 97%. High validation and feasibility values are caused by props that have met the criteria as a good medium and in accordance with metal coating material. The impact, the resulting props can be used as a medium that can help students gain a complete understanding of the concept of metal coating.