Development of PISA Model Mathematical Problems on Space and Shape Content to Measure Problem Solving Ability Middle School Mathematics

Abstract

This study aims to: produce a mathematical problem using the PISA Model on Space and Shape content that is valid and practical to measure the mathematical problem solving ability of junior high school students. This research is a research and development type of formative evaluation Tessmer which consists of two stages, namely; (1) preliminary stage, and (2) formative evaluation stage which includes self-evaluation and prototyping. The prototyping stage consists of expert reviews, one-to-one, small group, and field tests. The subjects of this study were students of class IX-I SMP Swasta Kualuh, totaling 32 students. The results of the study indicate that the PISA Model mathematical problems have been successfully developed on the quality Space and Shape content from the aspects of validity and practicality. Valid based on the results of validation by experts who stated "the questions can be used with a little revision", with a reliability coefficient of 0.716 (high reliability). Practically based on expert judgments, teacher response questionnaires and student response questionnaires. The results of the teacher's response from the six assessment items obtained an average score of 83.33% is "practical". While the student response of 75% is "positive" to the questions that have been given by the researcher. Based on the results of data analysis of students' mathematical problem solving abilities, the average is obtained While the student response of 75% is "positive" to the questions that have been given by the researcher. Based on the results of data analysis of students' mathematical problem solving abilities, the average is obtained While the student response of 75% is "positive" to the questions that have been given by the researcher. Based on the results of data analysis of students' mathematical problem solving abilities, the average is obtainedscore 49.22. This value indicates that the level of students' mathematical problem solving ability is included in the "medium" category.