<![CDATA[This study aims to describe: 1) the validity, practicality and effectiveness of e-modul based on a problem-based learning model that was developed to improve problem solving abilities and appreciation mathematics of students at SMP Dharma Pancasila Medan; 2) increasing students problem-solving abilities through E-Modul based on the developed problem-based learning model; 3) increasing student appreciation of mathematics through E-Modul based on the developed problem-based learning model. This research is a developmental research using the type of ADDIE development model. This development model consists of 5 stages of development, namely Analyze, Define, Development, Implementation and Evaluation. From the results of trial I and trial II, it was obtained: 1) E-modul based on a problem-based learning model to improve students' problem-solving skills and appreciation mathematics that was developed met valid, practical and effective criteria; 2) Improvement of problem-solving skills using e-modul based on a problem-based learning model that has been developed as seen from the N-gain value in trial I of 0.36 increased to 0.40 in trial II, meaning that it is in the "medium" category; and 3) Increasing student appreciation of mathematics with using e-modul based on a problem-based learning model which has been developed in terms of the N-gain value in trial I of 0.21 increased to 0.32 in trial II, meaning that it is in the "medium" category.]]>
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