Mathematical reasoning ability in solving AKM oriented questions of junior high school students

This research aims at describing the mathematical reasoning ability of junior high school students who have moderate mathematical ability in solving AKM-oriented questions on geometry and measurement content. AKM is a part of the National Assessment as a substitute for the National Examination (UN). Many types of research related to mathematical reasoning have been done by sharing content. However, there is still no research on AKM-oriented questions because AKM is a new policy issued by the Indonesian minister of education and has only been tested in mid-2021. The subject of this research is students of class VIII D of SMPN 1 Jogorogo. Test and interview techniques were used to collect the data. The test was given to students by giving three AKM-oriented questions consisting of personal, social and cultural, and scientific contexts. Semi-structured interviews were conducted with students by asking them several questions. The triangulation technique was used to validate the data. The data analysis technique was carried out through several stages, namely data collection, data reduction, data presentation, and drawing conclusions. The result of this research shows that students with moderate mathematical abilities have not been able to achieve all the indicators well. Students are able to achieve three of the four indicators well. The indicators mastered by students who have the moderate mathematical ability are predicting answers and solutions, considering the validity of arguments using deductive or inductive thinking, using supporting data to explain why the method used is correct, and providing explanations using models, facts, properties, and connections. Indicators that are not mastered by students with a moderate level of mathematical reasoning ability are analyzing statements and providing explanations that can support or contradict.