INSTRUMENTS DEVELOPMENT FOR THE ABILITY TO SOLVING MATHEMATICS STORY QUESTIONS FOR PRIMARY SCHOOL STUDENTS
This research aims to develop an instrument for elementary school students to solve mathematics story problems. Students' ability to solve math story problems is often a challenge, and previous research shows that these difficulties can be overcome through appropriate instruments. In this context, the ADDIE Model is used as a framework for developing educational instruments. Considering the low ranking of Indonesian students' mathematics abilities in international assessments, this research is necessary. The question instrument was created using the Rasch Model to obtain fit question items and analyze the Winsteps software output results. This measurement aims to provide information that can be used in developing better item instruments related to the ability to solve math story problems. This research shows the importance of developing appropriate and valid instruments to measure students' abilities in solving mathematics story problems. Using the ADDIE Model, instrument development can be carried out in a structured, practical and focused manner. The results of this research can improve the mathematical problem-solving abilities of elementary school students in Indonesia.
Development of Educational Instruments, Mathematical Problem Solving Ability, Mathematical Story Question Instruments, Elementary School.