Mutammimah, Jumadi, Insih Wilujeng, Heru Kuswanto
This study aims to determine the characteristics and effectiveness of the use of learning instruments using Student Worksheets (LKS) to measure science process skills of class X high school students by tracker application using guided inquiry learning models. The development procedure using the 4-D model proposed by Thiagarajan, namely define, design, develop and disseminate. The results of the study show that (1) the characteristics of the instrument have a difficulty level in the range of 0.09 to 0.54 with reliability at 0.74; (2) the instrument is said to be feasible in terms of content validity, empirical, and reliability; (3) the results of the measurement of science process skills of students of SMAN 1 Seyegan are in a good category with a percentage of 78.11%, and can be effective instruments to measure the science process skills of students. © 2019 Published under licence by IOP Publishing Ltd.
Yogyakarta State University, Indonesia
