KEVALIDAN PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) BERBASIS REALISTIC MATHEMATICS EDUCATION (RME) PADA MATERI RELASI DAN FUNGSI KELAS VIII SMPN 3 KOTA SOLOK

The background of this research is the textbooks in schools for the learning process of students, as well as the material in the book packages that are difficult for students to understand, because they are not related to daily life. Learning students is difficult to find an independent concept. Therefore this study aims to produce a valid Student Worksheet (LKPD) based on Realistic Mathematics Education (RME).. RME suggestions aimed at real or real life learners will also foster students' interest to learn and discover concepts from lessons that can be done independently. This type of research is research and development, using the Plomp development model consisting of 3 preliminary studies, Prototype Design and Development, Evaluation. The Preliminary Research stage addresses analysis. Stages of Design and Develop Prototype, namely meeting, developing, and trying out LKPD. Evaluation Stages are the results of products produced. Furthermore, the data collected using an instrument consisting of a questionnaire validated by 4 validators before being tried out. The instrument used to test the validity of LKPD was a material expert questionnaire, media expert, and linguist. Furthermore, the trial was conducted in class VIII.2 of SMPN 3, Solok City as many as 28 people. Based on data analysis, the validation of material, media and language expert questionnaires reached 84.23%, 79.99% and 92% with an average of 85.41%. Based on the results obtained by LKPD with very valid suggestions