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All Journal Jurnal Pendidikan Biologi Indonesia Biosfer: Jurnal Pendidikan Biologi
Bowo Sugiharto
Biology Education, Faculty of Teacher Training and Education, Universitas Sebelas Maret, Indonesia
Agriculture, Biological Sciences & Forestry Education

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Analysis items of the four-tier immune system multiple choice test instrument using rasch model Feni Andriani; Meti Indrowati; Bowo Sugiharto
Biosfer: Jurnal Pendidikan Biologi Vol 14 No 1 (2021): Biosfer: Jurnal Pendidikan Biologi
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/biosferjpb.18020

Abstract

The purpose of this study was to analyze the feasibility of the items of the four-tier multiple-choice test immune system instrument that had been developed. The development of the instrument using the Treagust (1988) model, namely defining content, collecting student misconceptions information, and developing a diagnostic test. A total of 25 items have been developed. The results of the instrument development were tested on 142 students of grade XI from several high schools in Surakarta who were selected by simple random sampling. The data analysis technique was performed using Rasch analysis in the Winstep application. The results of the construct validity test showed items number 5, 7, and 9 did not fit the validity standards. The reliability test shows that the value of Cronbach Alpha reliability is bad (n = 0.51), the value of the reliability item is special (no = 0.97), the value of person reliability is sufficient (n = 0.68), the value of person separation is weak (n = 1.44), and the item separation value is special (n = 5.38). The person discrimination test showed student 056P31 has the highest ability and student 098P51 has the lowest ability. The item discrimination test shows item number 1 is the best item and the bad item is number 14. The item difficulty analysis showed less proportionality because there were too many items in the easy and difficult categories. An expansion of the sample is needed to see a more comprehensive and diverse range of responses to instruments.
The effectiveness of STEM Project-Based Learning in improving students' environmental literacy abilities Tasya Umi Pertiwi; Dwi Oetomo; Bowo Sugiharto
JPBI (Jurnal Pendidikan Biologi Indonesia) Vol. 10 No. 2 (2024): JULY
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jpbi.v10i2.33562

Abstract

This study aimed to determine the difference in environmental literacy skills between the Project-Based Learning (PjBL) learning model and STEM-based PjBL. This research is quantitative research with a quasi-experimental method. The research design used is a non-equivalent pretest-posttest control group design. The dependent variable in this study is environmental literacy skills. The population in this study were all grade X students of State Senior High School (SHS) 7 of Surakarta in the 2023/2024 academic year. The sampling technique used was cluster random, tenth grade (X) A and B. A class consists of 36 students, as a control, using the PjBL model whereas as many as 35 students in B class is an experimental group was learned using the STEM-PjBL model. The data collection technique was carried out using pretest and posttest on the research sample. Data analysis technique using ANCOVA test. Instrument validation techniques using validity tests and reliability tests. The test results using ANCOVA have a significance value of <0.05, indicating differences in students' environmental literacy skills between the implementation of PjBL and STEM-PjBL. These results show that implementing the STEM-PjBL model was superior compared to PjBL only. It can be seen from the difference in learning outcomes of the control class, within the pretest and posttest, which showed an increase of 10.16%. In comparison, the experimental class results showed an increase of 16.94%. STEM-PjBL also helps students to be able to improve their environmental literacy skills in terms of knowledge, cognitive skills, attitudes, and behavior toward environmental problems.
Co-Authors Dwi Oetomo Feni Andriani Meti Indrowati Tasya Umi Pertiwi