Pengembangan Lembar Kerja Siswa (LKS) Berbasis Discovery Learning untuk Memfasilitasi Kemampuan Pemecahan Masalah Matematis Siswa

Abstract

It was Research and Development with ADDIE (Analysis, Design, Development, Implementation, Evaluation) model aiming at developing and producing Discovery Learning based student worksheet on Statistic material in facilitating student mathematical problem-solving ability at the eighth grade of Junior High School/Islamic Junior High School with valid minimum validity level, practical minimum practicality level, and effective minimum effectiveness level.  This research was administered at State Junior High School 30 Pekanbaru.  The object was Discovery Learning based student worksheet on Statistic material in facilitating student mathematical problem-solving ability at the eighth grade of Junior High School/Islamic Junior High School.  Validation sheet, questionnaire, and test were the techniques of collecting data.  The data obtained were analysed with qualitative and quantitative descriptive analysis techniques.  Based on data analysis, (1) Discovery Learning based student worksheet was stated containing high validity with validity mean 0.86 in validity test, (2) Discovery Learning based student worksheet was stated very practical with the ideal percentage 96.13%, and (3) The effectiveness analysis of Discovery Learning based student worksheet was obtained from the assessment data of learning achievement.  Mann Whitney U test was used to analyse, the result of Z_observed was 10.36, and Z_table was 1.96.  Z_observed was higher than Z_table, and it meant that H₀ was rejected and H_a was accepted.  So, there was a difference between control and experiment groups.  Discovery Learning based student worksheet was on Statistic material in facilitating student mathematical problem-solving ability met valid, practical, and effective criteria.