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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Inovasi Pendidikan IPA Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Chemistry and Environment Jurnal Pendidikan MIPA
Anti Kolonial Prodjosantoso
LPPM UNY
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Education Materials Science & Nanotechnology Mathematics Physics

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Curcumin Electropolymerization to Graphite Modification for Pb2+ Electrochemical Sensing Marwati, Siti; Prodjosantoso, Anti Kolonial; Padmaningrum, Regina Tutik; Wiraputri, Luthfia
Indonesian Journal of Chemistry and Environment Vol. 7 No. 2 (2024): DECEMBER 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i2.81727

Abstract

Curcumin is an organic ligand that can be electrocatalytic. Curcumin can be coated on graphite electrodes to produce electrodes modified with curcumin (GPC). Curcumin acts as a ligand and forms complex compounds with metals. The modification process was carried out by electropolymerization. The electrochemical method characterized the electroactive area, electron transfer, and interaction between the electrode and Pb2+ metal ions. Functional groups and surface morphology were characterized using FTIR and SEM. Validation of analytical methods including linear range, sensitivity, limit of detection, limit of quantitation, precision, and accuracy. The interaction of the GPC electrode with Pb2+ follows the electrochemical adsorption process. The GPC electrode can identify the presence of Pb2+ metal ions with a range of 3.01-70.03 µM and 181-919.2 µM. The results of the analytical method validation include linear ranges of 3.125-67.400 µM and 179.334-919.5 µM; sensitivity of 3.3605 µA/µM; limit of detection of 6.07 µM; limit of quantitation of 18.39 µM; precision of 0.93%; and accuracy of 99%.
How do Students Deal with Socio-scientific Issues: A Development of Students' Decision-Making Skills Instrument Utami, Restu; Prodjosantoso, Anti Kolonial; Rohaeti, Eli; Kamari, Azlan
Jurnal Pendidikan Matematika dan Sains Vol. 12 No. 1 (2024): June 2024
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpms.v12i1.75002

Abstract

Decision-making skills is needed in dealing with socio-scientific issues (SSI) that is developing in society. Students need to learn to make appropriate judgments, so that they were not easily manipulated or biased towards science-related issue. This paper aims to analyze the validity and reliability of the decision-making skills instrument. The research respondents were 75 high school students (female = 52, male = 23) at Bantul Regency, Special Region of Yogyakarta. The decision-making skills instrument consists of 5 items open-ended questionnaire. Respondents were determined using the random sampling method. The validity test results showed that all of 5 items developed were valid, with Pearson product moment values between 0.572 and 0.801. The reliability test results were valid for all 5 items, with a Cronbach's Alpha coefficient of 0.744. Therefore, it could be concluded that the instrument was valid and highly reliable to measure students' decision-making skills.
Interest in Science and Scientific Habits of Mind of High School Students in West Kalimantan Province Ahsani, Mar’atuzzakiya; Prodjosantoso, Anti Kolonial
Jurnal Pendidikan MIPA Vol 25, No 2 (2024): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study investigates the interest in science and scientific habits of mind among high school students in West Kalimantan Province. It examines the relationship between these two factors and explores differences based on gender and school status. The study used a survey method, involving 38 schools from six districts selected through a two-stage cluster random sampling technique. Data were collected via questionnaires with 22 statements on interest in science and 32 on scientific habits of mind. Results indicated that both male and female students showed good levels of interest in science, with private school students displaying higher interest than public school students. Similarly, scientific habits of mind were higher among private school students. A moderate relationship between interest in science and scientific habits of mind was found. Male students showed a significantly higher interest in science, but no significant gender difference in scientific habits of mind, though males scored slightly higher on average. Significant differences were also found when comparing interest in science and scientific habits of mind simultaneously between genders and school statuses, with males and private school students outperforming their counterparts.       Keywords: gender, interest in science, school status, scientific habits of mind. DOI: http://dx.doi.org/10.23960/jpmipa/v25i2.pp765-783
Literacy Analysis of Chemistry Teachers on STEAM (Science, Technology, Engineering, Arts and Mathematics) Learning Approach in Senior High Schools in West Nusa Tenggara Province Jannah, Annisah Faujiah Miftahul; Prodjosantoso, Anti Kolonial
Jurnal Penelitian Pendidikan IPA Vol 10 No 9 (2024): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i9.8730

Abstract

The research was conducted with the following objectives: (1) to determine the literacy ability of chemistry teachers in West Nusa Tenggara Province towards the STEAM leaning approach; (2) knowing the supporting and inhibiting factors of the chemistry teacher's literacy about the STEAM learning approach. The research was conducted at A-accredited Senior High Schools in West Nusa Tenggara Province. The sample selection in this study used a purposive sampling technique with a total of 40 participants in 20 schools. Data collection include open question sheets and interview guidelines. The data analysis technique in this study uses the Miles and Huberman model with data reduction technique, data display, and verification. The result of this study the literacy of state high schools' chemistry teacher in West Nusa Tenggara Province related to the STEAM approach is in the medium category. The supporting factor for the literacy of chemistry teachers in State High Schools in West Nusa Tenggara Province is the existence of professional training and development such as training workshop, MGMP and P4TK. Other supporting factors are professional relationship and the ability to access internet media. The factors that hinder the literacy of chemistry teacher are the lack of training and professional development, the lack of ability to access the internet as an information tool in the search for literature and the limitations of school facilities and infrastructure and time allocation.
STEM-Integrated Problem-Based Learning in Green Chemistry to Enhance Chemical Literacy and Scientific Attitudes Tairas, Nelson; Rohaeti, Eli; Prodjosantoso, Anti Kolonial; Ikhsan, Jaslin; Ningthias, Dyah Puspitasari
Jurnal Penelitian Pendidikan IPA Vol 11 No 3 (2025): March
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i3.10666

Abstract

Students' low chemical literacy and scientific attitudes in understanding chemical concepts, particularly in green chemistry, pose significant challenges in chemistry education today. Traditional learning models are often less effective in fostering 21st-century skills, such as critical thinking and problem-solving, which are essential for a more relevant and applicable chemistry education. This study aims to evaluate the impact of a STEM integrated with Problem-Based Learning (PBL) model on students' chemical literacy and scientific attitudes in green chemistry. Employing a quasi-experimental design, the study involved two experimental classes and two control classes. Each group participated in pretests and posttests to assess their chemical literacy and scientific attitudes. The analysis revealed that the PBL-STEM model significantly enhanced students' chemical literacy (N-Gain = 0.54) and scientific attitudes (N-Gain = 0.46) compared to traditional learning methods. Although the improvement in scientific attitudes was more pronounced, the increase in chemical literacy was relatively lower, indicating the necessity for adjustments in instructional approaches to deepen students' understanding of chemical concepts. The integration of green chemistry principles within the PBL-STEM model effectively connected chemistry education with global environmental challenges while also fostering 21st-century skills such as critical thinking and problem-solving. This study concludes that the PBL-STEM model presents a promising alternative for enhancing the quality of chemistry education and preparing students to navigate the complexities of an ever-evolving world.
PENGEMBANGAN MEDIA KOMIK IPA UNTUK MENINGKATKAN MOTIVASI BELAJAR DAN KARAKTER PESERTA DIDIK SMP Widyawati, Ani; Prodjosantoso, Anti Kolonial
Jurnal Inovasi Pendidikan IPA Vol. 1 No. 1: April 2015
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.874 KB) | DOI: 10.21831/jipi.v1i1.4529

Abstract

The objectives of this research were (1) to know the characteristics, (2) to review the advisability, and (3) to find out whether the science comic improve students learning motivation and character. This research is classified to Research and Development (R & D) by referring to the ten main procedures developed by Borg and Gall. However this research only applied nine of the ten procedures stated above, they were: introduction, planning, developing, early try out, revision, limited try out, and final product revision. The subject of this research was grade VIII students of SMP Muhammadiyah 2 Yogyakarta. There were 43 respondents consisting of 5 students for individual try out, 10 students for small group try out, and 28 students for field try out. The data collecting instruments were validation sheet for media and material experts, observation sheet, interview guidelines, and students'character and motivation questionnaire sheet. The result of this research are as follows: (1) the characteristic of science comic were character-based and contained integrated science's material, (2) the advisability of character education-based science comic is considered as very good, and (3) therefore, the comics are applicate to develop motivation and character for JHS students.
Co-Authors Ahsani, Mar’atuzzakiya Ani Widyawati, Ani Eli Rohaeti Jannah, Annisah Faujiah Miftahul Jaslin Ikhsan Kamari, Azlan Ningthias, Dyah Puspitasari Regina Tutik Padmaningrum Restu Utami, Restu Siti Marwati Tairas, Nelson Wiraputri, Luthfia