THE DEVELOPMENT OF STUDENT ACTIVITY SHEET ORIENTED GUIDED DISCOVERY LEARNING MODEL TO PRACTICE SCIENCE PROCESS SKILLS ON REDOX REACTION SUBJECT FOR TENTHGRADE SENIOR HIGH SCHOOL STUDENT
Abstract: This study is aimed
to 1) Determine the internal validity of students’ activity sheet developed
regarding to the criteria in terms of content, presentation, linguistic andgraph
2) Determine the external validity of students’ activity sheet developed in
terms of student responses supported by the observation data. The research
object is thelearning material that developed in the form of students’ activity
sheet that will be used as a learning tool in X grade of SMA/MA. The design of
students’ activity sheet development refers to the method of development of the
four-D method proposed byThiagarajan, Semmel, and Semmel. Science process skill
drilled in this research is to design a
scientific research, conduct scientific research, collect the data, analyze thedata,
and draw a conclusion. Sources of the data in this study were obtained from thedata
review and validation of chemistry lecturer and high school chemistry teacher.The
limited trial was conducted on 30 students of XI grade of Senior High School
that got the redox material included in the evaluation field. The data were
analyzed descriptively. The results of the study based on the validation data
from each of the criteria get a percentage between 90.35% to 93.33%, students’
activity sheet developed is categorized as valid. Based on the data from
student questionnairestudents responses for each criterion get a percentage
around 88.24% to 97.00%. Therefore, the students’ activity sheet developed is
categorized as valid.
Author: Mamik Damayanti and
Dian Novita
Journal Code: jpkimiagg170003
