Learning Trajectory of Statistics Learning Using the Context of Traditional Game Congklak to Train Mathematical Reasoning Ability
Yemi Kuswardi*, Budi Usodo, Nabilla Uristu Al Firdaus

Universitas Sebelas Maret Surakarta Indonesia

Abstract

The purpose of this research is to know how to develop a learning trajectory within the context of the traditional congklak game for VIII grade junior high school on statistics subjects to train learners^ mathematical reasoning skills. This study is a design research, with three stages namely preparing for the experiment, experiment design, and retrospective analysis. The subjects were VIII-grade learners of SMP Negeri 2 Wonogiri in the academic year 2022/2023. Data collection techniques used observation, interviews, photographs, recordings, and tests. Based on the results of the retrospective analysis, it shows that the application of a realistic mathematics approach using a learning trajectory in the context of a traditional game of congklak on statistics subject in each activity is carried out in two activities, namely informal activities and formal activities. In informal activities, experimental activities are conducted using the congklak game to understand the concepts of mean, mode, median, range, quartile, and interquartile range. In formal activities, learners utilize the results of experiments to find definitions and general formulas for mean, mode, median, range, quartiles, and interquartile range. Through these activities, applying a realistic mathematics approach that uses learning trajectory within the context of traditional congklak statistical subjects can develop students^ mathematical reasoning skills.

Keywords: design research, mathematical reasoning ability, learning trajectory, congklak game

Topic: Mathematics and Science Education