PENGEMBANGAN LKPD (LEMBAR KERJA PESERTA DIDIK) BERBASIS MODEL PEMBELAJARAN CONNECTING, ORGANIZING, REFLECTING, EXTENDING (CORE) PADA MATERI BADAN USAHA DALAM PEREKONOMIAN INDONESIA PADA PESERTA DIDIK KELAS X IPS 1

The main problem in this research is motivated by 1) low learning outcomes, 2) learning has not used LKPD and 3) economic learning which only comes from textbooks. The purpose of this study was to determine the level of validity, level of attractiveness, convenience and usefulness as well as the level of effectiveness of the development of LKPD based on the connecting, organizing, reflecting, extending (CORE) learning model in students of class X IPS 1 even semester of SMA Negeri 1 Gedongtataan. This research is a type of research and development (research and development) is research that is used to produce certain products and test the effectiveness of these products. The resulting product is LKPD based on the connecting, organizing, reflecting, extending (CORE) learning model in economics subjects to determine product validation, attractiveness, convenience and usefulness as well as the effectiveness of the LKPD to be developed. The stages of the research carried out refer to the ADDIE development model developed by Dick and Carey, including analysis, design, development, implementation and evaluation. The results showed that 1) the level of validity of the LKPD was very valid, this can be seen from the results of expert validation, namely (a) linguist validation 87.50%, (b) material validation 88.46% and (c) media validation 88.33%. Meanwhile, 2) the level of attractiveness, convenience and usefulness also shows a very good assessment score, namely (a) the attractiveness test score is 3.40, (b) the ease test score is 3.42, and (c) the usefulness test score is 3.46. And 3) the level of effectiveness of this LKPD is also quite good because it has a completeness percentage of 82.35%. So it can be concluded that the development of LKPD based on the connecting, organizing, reflecting, extending (CORE) learning model is very feasible to be developed for students of class X Social Sciences 1 even semester of SMA Negeri 1 Gedongtaaan.