Development of a CTL-Based E-Worksheet to Strengthen Junior High School Students’ Problem-Solving Skills on Systems of Linear Equations in Two Variables
Keywords:
E-LKPD, SPLDV, Problem Solving SkillsAbstract
The lack of mathematical problem-solving ability of junior high school students causes difficulties in learning the System of Linear Equations in Two Variables and in solving problems according to the stages of mathematical problem solving. This indicates that students’ mathematical problem-solving skills, including in the topic of the System of Linear Equations in Two Variables, are still relatively weak. This study aims to develop a valid and practical E-LKPD to strengthen students’ problem-solving abilities related to the System of Linear Equations in Two Variables at the junior high school level. The development of the E-LKPD employed a design research methodology of the development study type, focusing on the process of developing and refining the learning product through formative evaluation. The formative evaluation phase resulted in a score of 88% for validity—covering content, construct, and language aspects—during the expert review stage, and a score of 81.6% for practicality during the small-group stage. The developed E-LKPD was proven to be feasible and practical for use as instructional material in the learning process of the System of Linear Equations in Two Variables. Furthermore, this E-LKPD was also able to strengthen junior high school students’ problem-solving abilities related to the System of Linear Equations in Two Variables.
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