Novia Linda Prayitno, I.G.P. Suryadarma
This study has purposes to: (1) Determine the eligibility of Lembar Kegiatan Peserta Didik (LKPD); (2) Determine the eligibility of LKPD model of group investigation on the understanding of students grade X. This research uses research and development approaches with steps of 4-D (four-D-model). Subject of trial of the study were limited to 10 students of grade XI. Subject of operational product trials consists of two classes, the experimental classes and control class which consists of 24 students of grade X of one high school in Yogyakarta, Indonesia. Data were analyzed by using SPSS to determine the validity, reliability item, and analyze data by the Independent T-Test. This research resulted in the product of the LKPD fit for use as a learning resource. The results of 1) validation subject matter and learning experts showed good and very good results with an average score of 2.8 and 3.3.2) The value of the understanding the significance of students at the pre-test of learning is 0.125> 0.05, whereas, at post learning is 0.007 <0.05. © 2019 Published under licence by IOP Publishing Ltd.
Yogyakarta State University, Indonesia
