The objective of this research was to describe the concept mastery of the tenth year students in the learning topic of Newton Law by using Rasch model analysis. This was a case study research by applying group post-test only research design. There were 30 students taken as a sample consisting of 6 male students and 24 female students with an average age of 15 to 16 years. There were 20 items of multiple-choice tests used in this research (r = 0.88). The result of analysis by using Rasch model such as person fit order where there were 8 students with the outfit mean-square score out of the limit. The students “18P” code is categorized as not smart students because they were not able to solve the easiest problems of the test but they could solve more difficult problems. Generally, the percentage of the students’ mastery of concept mastery was categorized as low.

This study aims to determine the ability to understand the concept and adversity quotient of tenth-grade students on elasticity. This research is a single case study where the purpose of the study is to examine the conditions and situations that are happening, thus providing a picture based on facts found in the field. The design of this study is the post-only group design. Data analysis techniques using the Rasch model with a research sample of 30 students consisting of 11 male students and 19 female students. The instrument used in this study was a test of concept comprehension ability with multiple choice questions of 15 questions (r = 0.62) and an adversity quotient questionnaire with an Adversity Response Profile (ARP) questionnaire of 20 statements (r = 0.77). The results showed that in general the ability to understand concepts in each concept was low and the adversity quotient also showed that the majority of students had moderate fighting power (camper). The conclusion of this study is that there must be a treatment that makes students able to understand physical concepts such as models or learning methods and makes students able to face and overcome difficulties in learning physics.

This research aims to evaluate of physics learning on Momentum and Impulse topic of the senior high school students. Learning evaluation was held toward students’ science processing skill, knowledge and competency, and skill of presenting a product. Learning evaluation was conducted on material momentum and impulse to the tenth year students of senior high school. This was a quantitative research by applying post-test only group design. Students’ science processing skill was measured by using students’ worksheet. The indicators consisted of observing, classifying, predicting, formulating hypothesis, designing investigation, and conducting experiment. Competence of knowledge was measured through multiple choice tests. Skill of presenting product was measured by applying performance assessment rubric. The data were analysed by using Rasch Model data analysis technique. The result of the research showed that; (1) the students’ science processing skill was categorized as skilful from the highest to the lowest found in the activity of predicting, formulating hypothesis, conducting experiment, classifying, and observation. students’ achievement on the activity of designing investigation was categorized skilful and intermediate. (2) The students’ average achievement of knowledge competency was categorized medium, (3) the average achievement of the students in presenting product was categorized low.