Mastery examination of mircroscope concepts with microscope essay test (MET) via the rasch model C S A Barus, P Siahaan, Endi Suhendi
Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia
Abstract
Mastery of concepts was essential for further floating into higher thought processes. This research aims to determine the level of mastery of the concept of microscopy in high school students by using the MET (Microscope Essay Test). Mastery of concepts was described through cognitive processes described from indicators of competency achievement. The instrument was developed in the test items and non-tests with a validity of 0.66, which was applied to 24 students consisting of 14 girls and ten boys in one of Bandung^s private schools. Data were analyzed using Rasch modeling using Winstep software type of research showed the ability to explain the function of the Microscope is very high- the ability to draw is included in the high category. However, the teacher^s dominance is also very high, but the ability to improve the C4 magnification, determine magnification, determine the length of the C5 Microscope, and design a microscope included in the category of very low. Examination of Mastery of Microscope Concepts with MET (Microscope Essay Test) Based on the Rasch model can be recommended to Educators to use learning models that can improve students^ mastery of concept concepts
