PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK BERBASIS PROBLEM BASED LEARNING PADA MATERI BANGUN RUANG SISI DATAR KELAS VIII SMP/MTs

Abstract

This Research aims to describe the process of Developing Student Worksheets based on Problem Based Learning on the material of Building a Flat Sided Space of class VIII SMP/MTs that are valid. This Research method is Research and Development (R&D) with development ADDIE model by Robert Marie Branch (2009), but in this study only using ADD namely Analysis, Design, and Development. The instrument used were questionnaire of  expert material validation sheets, a media expert validation sheets and language expert validation sheest with five rating scales, namely very good given a score of 5, good being given a score of 4, enough given a score of 3, less being given a score of 2 and very less being given a score of 1. The validator involved in validating are 2 people. The data analysis technique used qualitative analysis and descriptive analysis, namely by using the validation value formula. The results showed that the validation results of material experts obtained an average validation value of 84%, media experts obtained a validation value of 80.91% and linguists 80.77%. From these results it was concluded that the Student Worksheet (LKPD) based on Problem Based Learning (PBL) was categorized as valid.