Articles
<![CDATA[THE EFFECT OF pH ON THE ADSORPTION OF MICRONUTRIENT CATIONS OF Ca 2+ AND K + BY SILICA FROM LAPINDO MUD ]]>
<![CDATA[Jaslin Ikhsan]]>;
<![CDATA[Siti Sulastri]]>;
<![CDATA[Erfan Priyambodo]]>
<![CDATA[ Jurnal Penelitian Saintek Vol 20, No 1: April 2015 ]]>
Publisher : <![CDATA[Institute of Research and Community Services, Universitas Negeri Yogyakarta ]]>
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DOI: 10.21831/jps.v20i1.5603
<![CDATA[The aim of this research was to determine the effect of pH on the adsorption of micronu- trients of Ca 2+ and K . by silica from lapindo mud. Data were collected by the adsorption experiments, on which 3 grams of silica separated from Lapindo mudwere dissolved in 300 mL of 0.0001 or 0.001 M Ca + 2+ or K ., and stirred for 2 hours. The pH of suspension was varied and left for equilibrate for 2 hours, and a sample was taken and measured for free concentration of K + + .cation using Flame Atomic Emission Spectroscopy and of Ca using Atomic Absorption Spectroscopy (AAS). The pH ranges were from 3 to 10. Temperature o 30 C and contact time of 2 hours were maintained. The research showed that both cations were adsorbed in sigmoid curve, increased with increasing pH values. In entire ranges of observed pH, the percentage of cations adsorbed by silica was not different signifi cantly. The adsorbent of silica formed silanol (SiOH) in water. The –OH groups of silica were protonated forming SiOH o at lower pH and deprotonated forming SiO¯ at higher pH. Wether Ca 2+ or K + 2 + . cations were bound to silica surfacesvia cation exchange reactions, on which Ca2+ or K + . exchanged H of SiOH using one charge of the cations, forming [SiO(CaO)] for Ca 2+ , and [SiO-K] for K]]>
<![CDATA[Pengaruh Penerapan Multiple Intelligences dengan Model PBL Terhadap Pemahaman Konsep dan Kemampuan Berpikir Kreatif ]]>
<![CDATA[Kartika Gita Septiana]]>;
<![CDATA[Jaslin Ikhsan]]>
<![CDATA[ JEMS: Jurnal Edukasi Matematika dan Sains Vol 5, No 1 (2017) ]]>
Publisher : <![CDATA[Universitas PGRI Madiun ]]>
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DOI: 10.25273/jems.v5i1.1785
<![CDATA[Penelitian ini bertujuan untuk mengetahui adanya perbedaan hasil sebelum dan sesudah pembelajaran IPA dengan menerapkan multiple intelligences dengan model Problem Based Learning dan besar pengaruh penerapan multiple intelligences dengan model Problem Based Learning dalam pembelajaran IPA baik terhadap pemahaman konsep, maupun terhadap kemampuan berpikir kreatif siswa SMP N 1 Sentolo. Jenis penelitian ini adalah quasi eksperimen dengan desain one group pretest posttest design. Populasi penelitian ini adalah seluruh siswa kelas VIII SMP N 1 Sentolo pada semester kedua Tahun ajaran 2013/2014.. Teknik pengambilan data yang digunakan adalah teknik angket, observasi dan tes. Teknik observasi digunakan untuk mengetahui keterlaksanaan pembelajaran, teknik angket digunakan untuk mengetahui kecenderungan kecerdasan siswa, dan teknik tes digunakan untuk mengetahui pemahaman konsep dan kemampuan berpikir kreatif pada pokok bahasan Bunyi sebelum dan sesuadah perlakuan. Teknik analisis data yang digunakan adalah paired sample t-test dan effect size. Hasil penelitian ini menunjukan bahwa terdapat perbedaan hasil yang signifikan sebelum dan sesudah penerapan multiple intelligences dengan model problem based learning dalam pembelajaran IPA baik terhadap pemahaman konsep maupun kemampuan berpikir kreatif. Hal ini ditunjukan dari perolehan hasil analisis uji hipotesis paired sample t tes bahwa nilai Sig.(2.tailed) yang diperoleh sebesar 0,000. Selain itu, berdasarkan nilai effect size meemberikan informasi bahwa penerapan multiple intelligences dengan model PBL dalam pembelajaran IPA memberikan pengaruh yang tinggi. Hal ini ditunjukan dari nilai effect size sebesar 2,39 untuk pengaruh penerapan multiple intelligences terhadap pemahaman konsep, dan 4,4 untuk pengaruh penerapan multiple intelligences terhadap pemahaman konsep.]]>
<![CDATA[The Effect of Media of Chemondro and Hybrid of Video Conference on Teaching Learning towards Students’ Self-efficacy and Students’ Achievement on the Subject of Solubility and Solubility Product ]]>
<![CDATA[Nira Listyawati]]>;
<![CDATA[Jaslin Ikhsan]]>;
<![CDATA[Kristian Handoyo Sugiyarto]]>;
<![CDATA[Antuni Wiyarsi]]>
<![CDATA[ Formatif: Jurnal Ilmiah Pendidikan MIPA Vol 11, No 2 (2021): Formatif: Jurnal Ilmiah Pendidikan MIPA ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat Universitas Indraprasta PGRI ]]>
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DOI: 10.30998/formatif.v11i2.9619
<![CDATA[This research was conducted to analyze the effect of using the media of chemondro and hybrid video conferences in the teaching-learning toward students’ self-efficacy and students’ achievement on the subject of solubility and solubility product. The instruments of this research are the questionnaire and solubility and solubility product test. Thus, the research was set as quasi-experiment research using post-test only and non-equivalent control group design. By purposive sampling technique, the samples from 6 classes composed of 2 public senior high schools were selected. The classes were divided into 2 of hybrid learning with video conference and chemondro game (A), 2 classes of hybrid learning with video conference (B), and 2 classes of chemondro game (C). The corresponding data were collected on the basis of a self-efficacy learning questionnaire and a multiple-choice posttest of students' achievement in the subject of solubility and solubility product. The data were then tested by Manova. The results show that there was a significant difference in students’ self-efficacy and students’ chemistry cognitive achievement among the three classes, A, B, and C.]]>
<![CDATA[Pelatihan Pengembangan Pembelajaran Kimia Terintegrasi Konteks Kejuruan Untuk Meningkatkan Profesionalisme Guru SMK di DIY ]]>
<![CDATA[Antuni Wiyarsi]]>;
<![CDATA[Jaslin Ikhsan]]>;
<![CDATA[Sukisman Sukisman]]>
<![CDATA[ Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Vol 1, No 2 (2017) ]]>
Publisher : <![CDATA[Yogyakarta State University ]]>
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DOI: 10.21831/jpmmp.v1i2.15562
<![CDATA[Pembelajaran kimia yang terintegrasi konteks kejuruan akan meningkatkan minat belajar siswa karena pembelajaran menjadi lebih bermakna bagi siswa SMK. Kegiatan PPM ini bertujuan untuk membekali guru kimia SMK dengan pengetahuan pentingnya integrasi konten kimia dengan konten kejuruan dan penguatan konten kimia dalam konteks kejuruan serta memotivasi guru kimia untuk mengembangkan pembelajaran kimia yang sesuai konteks kejuruan. Kegiatan ini ditujukan untuk guru mata pelajaran kimia yang mengajar di SMK. Kegiatan dilaksanakan dengan ceramah, diskusi dan penugasan. Materi pelatihan yang diberikan meliputi; kurikulum kimia SMK, integrasi konten kimia dengan konteks kejuruan, konten pengayaan minyak bumi untuk SMK teknologi rekayasa, konten pengayaan pengelolaan limbah pertanian untuk SMK agribisnis dan agroteknologi serta konten pengayaan kimia obat untuk SMK kesehatan. Hasil evaluasi menunjukkan bahwa sebagian besar peserta aktif selama kegiatan serta memberikan tanggapan yang sangat baik terhadap kegiatan pelatiha. Kegiatan pelatihan mampu memberikan pemahaman awal tentang pentingnya mengintegrasikan konteks kejuruan dalam pembelajaran kimia di SMK meningkatkan pemahaman konten pengayaan kimia konteks kejuruan guru kimia SMK serta memberikan motivasi yang sangat baik pada guru untuk mengembangkan pembelajaran kimia di SMK sesuai konteks kejuruan.]]>
<![CDATA[Using Virtual Laboratory: A Profile of Students' Self-Efficacy on Electrochemistry ]]>
<![CDATA[Febrian Solikhin]]>;
<![CDATA[Kristian Handoyo Sugiyarto]]>;
<![CDATA[Jaslin Ikhsan]]>
<![CDATA[ Acta Chimica Asiana Vol. 5 No. 1 (2022) ]]>
Publisher : <![CDATA[The University of Mataram ]]>
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DOI: 10.29303/aca.v5i1.116
<![CDATA[This study aimed to analyze the profile of students' self-efficacy in the use of virtual laboratory in electrochemistry class. It is quantitative descriptive research. The total subject of this research was 90 students from grade 12th public senior high school. Three classes were selected randomly to determine the sample: C class using conventional laboratory, E-1 class using virtual laboratories as a substitute, and E-2 class using both a virtual laboratory as a supplement. The instrument was a self-efficacy questionnaire that consisted of 22 items. The data were analyzed and categorized into 5 rating categories: very high, high, fair, low, and very low. The results showed that the profile of students' self-efficacy in the E2-class was highest than in 2 other classes.]]>
<![CDATA[Analisis Motivasi Belajar Siswa pada Implementasi Model Pembelajaran Direct Instruction ]]>
<![CDATA[Lutfiah Nur Hidayati]]>;
<![CDATA[Restu Utami]]>;
<![CDATA[Antuni Wiyarsi]]>;
<![CDATA[Jaslin Ikhsan]]>
<![CDATA[ Jurnal Penelitian Pendidikan IPA Vol 8 No 5 (2022): November ]]>
Publisher : <![CDATA[Postgraduate, University of Mataram ]]>
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DOI: 10.29303/jppipa.v8i5.2090
<![CDATA[This study aims to analyze students’ learning motivation on the implementation of Direct Instruction learning model in Muhammadiyah Pakem Senior High School. The research design used in this research is pre-experimental with a one-shot case study. The study sample consisted of all class X students with a total of 11 students. Sampling technique using is purposive sampling. Data collection techniques were carried out by questionnaires to measure students' learning motivation. The data analysis used is a descriptive analysis by calculating the percentage of the overall score on the learning motivation questionnaire. The results of the study were the level of students’ learning motivation in Muhammadiyah Pakem Senior High School in the high-very high category. The present of the teachers in the Direct Instruction learning model have a big role to develop students' learning motivation]]>
<![CDATA[Profil Sikap Ilmiah Peserta Didik Melalui Kegiatan Praktikum Menggunakan E-LKPD Berbasis Bahan Kimia di Rumah ]]>
<![CDATA[Febri Saputri]]>;
<![CDATA[Eli Rohaeti]]>;
<![CDATA[Antuni Wiyarsi]]>;
<![CDATA[Jaslin Ikhsan]]>
<![CDATA[ Jurnal Penelitian Pendidikan IPA Vol 8 No 5 (2022): November ]]>
Publisher : <![CDATA[Postgraduate, University of Mataram ]]>
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DOI: 10.29303/jppipa.v8i5.2094
<![CDATA[Students’ competencies in the 21st century can be achieved if the students have various skills and scientific attitudes. Scientific Attitude will affect students' minds or memories and actions that require in making decisions and problem-solving in the future. So, the aim of this study was to describe the profile of students' scientific attitudes through Practicum Activities Using Student E-Worksheet Based Chemicals at Home. This research used a descriptive quantitative method. The research was conducted in Budi Mulia Dua senior high school, Yogyakarta, Indonesia, at the last of the first semester of the academic year 2021/2022. The observation involved 15 of tenth-grade students as the participant. The data was collected using an observation sheet which was developed based on students' scientific attitude aspects. The instrument has been validated by expert learning lecturers so that it is feasible to use. The data obtained from the students were analyzed descriptively and quantitatively. The results of students’ scientific attitudes were in the good category ie. 75.8%. Therefore, teachers need to innovate the learning process in order to improve students' scientific attitudes]]>
<![CDATA[PENGEMBANGAN INSTRUMEN PENILAIAN KEMAMPUAN KOMUNIKASI SAINS SEBAGAI BAGIAN DARI KETERAMPILAN ABAD 21 ]]>
<![CDATA[Laifa Rahmawati]]>;
<![CDATA[Jumadi Jumadi]]>;
<![CDATA[Jaslin Ikhsan]]>
<![CDATA[ Prima Magistra: Jurnal Ilmiah Kependidikan Vol. 2 No. 2 (2021): Volume 2 Nomor 2 Tahun 2021 ]]>
Publisher : <![CDATA[Program Studi PGSD Universitas Flores ]]>
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DOI: 10.37478/jpm.v2i2.933
<![CDATA[Research has been carried out on the development of instruments for science communication skills as part of 21st Century skills at the higher education level. The instrument was developed from indicators of communication skills, namely understanding the key ideas of other people's utterances and presenting or reading data in the form of tables or graphs. The development carried out with the Borg and Gall model produces valid and reliable instruments. The test subjects were 94 students who were selected by cluster sampling. The tests carried out included construct validation tests, empirical validation tests, and testing the use of instruments to measure science communication skills. The results of construct validation show that the instrument is considered very good and suitable for use. The results of empirical validation show that the instrument is valid and reliable so that it can be used. The trial results show that the instrument for the assessment of the results of this development can be used to measure science communication skills.]]>
<![CDATA[Bahasa Inggris ]]>
<![CDATA[Nur Huda]]>;
<![CDATA[Eli Rohaeti]]>;
<![CDATA[Jaslin Ikhsan]]>
<![CDATA[ Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April ]]>
Publisher : <![CDATA[Postgraduate, University of Mataram ]]>
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DOI: 10.29303/jppipa.v9i4.2784
<![CDATA[This study's main objective is to explore chemistry students' attitudes towards the learning policies implemented during the Covid-19 Pandemic. Method: This study used a quantitative approach with a cross-sectional survey method. Respondents were 201 students majoring in chemistry at a university in Surabaya, Indonesia. The data collection instrument was a questionnaire developed during the research and validated through a confirmatory factor analysis (CFA) test. Data analysis used is descriptive statistics and two-way ANOVA test to interpret differences in student perspectives based on two characteristics. Findings: 18 of the 21 questionnaire items fall into the valid and reliable category with a loading factor value greater than 0.50. From the two characteristics of the respondents who were analyzed through the two-way ANOVA test, there were significant differences in student perspectives on the implementation of learning based on learning intensity with significance levels of 0.031. Overall, 52% of students choose blended learning, 46% face-to-face, and 2% online learning. Implications for Research and Practice: Currently, blended learning is still relevant for chemistry students in Indonesia. With notes, face-to-face learning is carried out more than virtual (online) learning, and practical learning in the laboratory is carried out face-to-face in full.]]>
<![CDATA[Guided Inquiry Learning: How to Improve Students' Argumentation Abilities in Science Learning? ]]>
<![CDATA[Della Novri Yanti]]>;
<![CDATA[Jaslin Ikhsan]]>;
<![CDATA[Antuni Wiyarsi]]>
<![CDATA[ Journal of Education Technology Vol. 7 No. 2 (2023): May ]]>
Publisher : <![CDATA[Universitas Pendidikan Ganesha ]]>
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DOI: 10.23887/jet.v7i2.63193
<![CDATA[A big challenge for educators in carrying out learning that has undergone drastic changes. During the pandemic, learning activities carried out online were again carried out offline. This learning adaptation has a considerable impact on learning outcomes. Students have difficulty understanding chemical concepts and are passive in giving opinions in learning so it is difficult to integrate knowledge. During online learning activities, student learning resources are still focused on abstract concepts and books provided. The purpose of this study was to improve students' argumentation skills on chemistry in interpreting the knowledge obtained with the guided inquiry learning model. This type of research is a descriptive research with a quantitative approach. Data collection techniques used observation, argumentation ability tests, and documentation. The data obtained were analyzed using quantitative analysis techniques. Based on the results of the study, it showed that students were able to make claims but had difficulty presenting data and proving evidence. Students' initial argumentation abilities can be a reference for educators to determine future learning activities, with the hope that learning is designed not only to focus on achieving conceptual understanding but to develop students' argumentation abilities.]]>
