Designing Inquiry-based Laboratory on Concave Eyeglasses Experiment to exercise Student's Science Inquiry Skills

Abstract

This paper is aimed to design and to implement an inquiry-based laboratory model and cookbook experiment model on a new simple concave eyeglasses experiment in Indonesia. The model is a part of experiment models contributing to developing standardization of national experiment examination through the revised 2013 curriculum framework. The model has been successfully applied to K-11 in a Private Senior High School. The best achievement of the model is very high with (0.92) item validity as much as its reliability, good (0.50) discrimination power, and medium (0.64) difficulty index. The average student can achieve 72% of the experiment process test including finding problems, tools, method, procedure, data, analysis, and conclusion. We concluded that several competencies can be trained by using inquiry-based laboratory experiments, including understanding experimental problem, determining innovative tools needed, choosing an appropriate method, composing the experiment procedure, collecting data, analyzing data, and writing conclusion.