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All Journal Natural Science: Journal of Science and Technology Majalah Ilmiah Peternakan Jurnal Pendidikan IPA Indonesia Journal of the Indonesian Tropical Animal Agriculture Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan Tropical Animal Science Journal JURNAL KOMUNIKATIO Interdisciplinary Social Studies
S. Rahayu, S.
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Malang, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Education Energy Environmental Science Languange, Linguistic, Communication & Media Public Health Social Sciences Veterinary

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THE EFFECT OF 5E LEARNING CYCLE INSTRUCTIONAL MODEL USING SOCIOSCIENTIFIC ISSUES (SSI) LEARNING CONTEXT ON STUDENTS’ CRITICAL THINKING Cahyarini, A.; Rahayu, S.; Yahmin, Y.
Jurnal Pendidikan IPA Indonesia Vol 5, No 2 (2016): October 2016
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v5i2.7683

Abstract

The aim of this study was to investigate the effect of 5E learning cycle instructional model using socioscientific issues (SSI) learning context on students’ critical thinking skills of acid-base. This study used quasi-experimental posttest only control group design. The sample consisted of three classes, which were XI MIA-4class (n = 32) that learned using 5E LC model, XI MIA-5 class (n = 33) that learned using 5E LC+SSI, and XI MIA-6 class (n = 32) that learned using conventional method. The samples were choosen by convenience sampling technique. The test instrument consisted of 15 multiple choice items which were valid and reliable (r = 0.806). The data were analyzed using one way ANOVA test and LSD posthoc test. The results of this study indicated that the students who learned using 5E LC+SSI model showed greater levels of critical thinking skills (  = 74,95) than both the student who learned using 5E LC model (  = 74,17) and  the student who learned using conventional method (  = 68,96). Based on statistics analysis, there was significant differences on students’ critical thinkings between students taught using conventional method and students taught either using 5E LC+SSI model and 5E LC model. However,  there was no significant differences on students’ critical thinking skills between students taught using 5E LC+SSI model and the students taught using 5E LC model.
SOCIOSCIENTIFIC ISSUES (SSI) IN REACTION RATES TOPIC AND ITS EFFECT ON THE CRITICAL THINKING SKILLS OF HIGH SCHOOL STUDENTS Pratiwi, Y. N.; Rahayu, S.; Fajaroh, F.
Jurnal Pendidikan IPA Indonesia Vol 5, No 2 (2016): October 2016
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v5i2.7676

Abstract

The aim of this research was to investigate the difference in students’ critical thinking which learnt cooperatively using different learning context. Quasy experimental postest only control group design was chosen as experimental design using two equivalent classes as the sample. The first class (15 MIA 5, n = 30) was taught using socioscientific issues (SSI) as the learning context and the second one (15 MIA 6, n = 30) was not. The research instrument was a test consisted of 16 items of multiple choice questionsdeveloped based on Ennis’ critical thinking indicators. This instrument have been validated and its reliability approved with r = 0,765. Students’ post-test scores were analyzed using t-test with SPSS 16 for Windows. The result showed that statistically students’ critical thinking skills betweentwo classes was significanly different (Asym. Sig = 0,037). Students who taught using SSI have higher score (73,96) than the one wasn’t (66,04). Result shows that using socioscientific issues (SSI) as learning context has significant effect on high school students’ critical thinking skills.
THE EFFECT OF 5E LEARNING CYCLE INSTRUCTIONAL MODEL USING SOCIOSCIENTIFIC ISSUES (SSI) LEARNING CONTEXT ON STUDENTS’ CRITICAL THINKING Cahyarini, A.; Rahayu, S.; Yahmin, Y.
Jurnal Pendidikan IPA Indonesia Vol 5, No 2 (2016): October 2016
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v5i2.7683

Abstract

The aim of this study was to investigate the effect of 5E learning cycle instructional model using socioscientific issues (SSI) learning context on students’ critical thinking skills of acid-base. This study used quasi-experimental posttest only control group design. The sample consisted of three classes, which were XI MIA-4class (n = 32) that learned using 5E LC model, XI MIA-5 class (n = 33) that learned using 5E LC+SSI, and XI MIA-6 class (n = 32) that learned using conventional method. The samples were choosen by convenience sampling technique. The test instrument consisted of 15 multiple choice items which were valid and reliable (r = 0.806). The data were analyzed using one way ANOVA test and LSD posthoc test. The results of this study indicated that the students who learned using 5E LC+SSI model showed greater levels of critical thinking skills (  = 74,95) than both the student who learned using 5E LC model (  = 74,17) and  the student who learned using conventional method (  = 68,96). Based on statistics analysis, there was significant differences on students’ critical thinkings between students taught using conventional method and students taught either using 5E LC+SSI model and 5E LC model. However,  there was no significant differences on students’ critical thinking skills between students taught using 5E LC+SSI model and the students taught using 5E LC model.
SOCIOSCIENTIFIC ISSUES (SSI) IN REACTION RATES TOPIC AND ITS EFFECT ON THE CRITICAL THINKING SKILLS OF HIGH SCHOOL STUDENTS Pratiwi, Y. N.; Rahayu, S.; Fajaroh, F.
Jurnal Pendidikan IPA Indonesia Vol 5, No 2 (2016): October 2016
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v5i2.7676

Abstract

The aim of this research was to investigate the difference in students’ critical thinking which learnt cooperatively using different learning context. Quasy experimental postest only control group design was chosen as experimental design using two equivalent classes as the sample. The first class (15 MIA 5, n = 30) was taught using socioscientific issues (SSI) as the learning context and the second one (15 MIA 6, n = 30) was not. The research instrument was a test consisted of 16 items of multiple choice questionsdeveloped based on Ennis’ critical thinking indicators. This instrument have been validated and its reliability approved with r = 0,765. Students’ post-test scores were analyzed using t-test with SPSS 16 for Windows. The result showed that statistically students’ critical thinking skills betweentwo classes was significanly different (Asym. Sig = 0,037). Students who taught using SSI have higher score (73,96) than the one wasn’t (66,04). Result shows that using socioscientific issues (SSI) as learning context has significant effect on high school students’ critical thinking skills.
PENGARUH KOMUNIKASI INTERPERSONAL DARI MUTU PELAYANAN INFORMASI TERHADAP KEPERCAYAAN PUBLIK DI KECAMATAN CARINGIN KABUPATEN BOGOR Rahayu, S.; Ratnamulyani, Ike Atikah; Kusumadinata, Ali Alamsyah
JURNAL KOMUNIKATIO Vol. 2 No. 1 (2016): Jurnal Komunikatio
Publisher : Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (576.75 KB) | DOI: 10.30997/jk.v2i1.207

Abstract

Penelitian ini memusatkan perhatian pada pengaruh komunikasi interpersonal dari mutu pelayananinformasi terhadap kepercayaan publik. Tujuan dari penelitian ini adalah untuk mengetahuikomunikasi interpersonal petugas playanan, untuk mengetahui kepercayaan publik serta untukmengetahui pengaruh komunikasi interpersonal terhadap kepercayaan publik di Kecamatan CaringinKabupaten Bogor. Penelitian ini menggunakan metode penelitian kuantitatif dengan tknik sampel yangdigunakan adalah aksidental. Data dari hasil kuesioner selanjutnya di masukkan ke dalam tabulasianalisis secara manual dan diinterpretasikan. Sedangkan untuk menghitung pengaruh menggunakanRank Spearman pada SPSS 18. Berdasarkan hasil penelitian dengan menggunakan tabulasi analisissecara manual diketahui bahwa variabel X (komunikasi interpersonal) diperoleh angka penafsiran 4,0yang berada pada kategori baik, dan pada variabel Y (kepercayaan publik) diperoleh angka penafsiran4,1 yang berada pada kategori baik. Pada perhitungan pengaruh diperoleh nilai koefisien korelasi (r)sebesar 0,486 yang berada di level sedang, maka dapat disimpulkan bahwa korelasi diantara keduavariabel X (komunikasi interpersonal) dan variabel Y (kepercayaan publik) memiliki pengaruh yangnyata dengan signifikan α 1% serta menunjukan hubungan positif.Kata Kunci : Komunikasi Interpersonal, Kepercayaan Publik, Pelayanan Informasi.
ISOLASI, KARAKTERISASI DAN IDENTIFIKASI BAKTERI ASAM LAKTAT PENGHASIL Α & Β-GALAKTOSIDASE PRODUK FERMENTASI KULIT BUAH CEMPEDAK [ARTHOCARPUS INTEGER (THUNB.) MERR.] DAN BUNGA TIGARUN [CRATAEVA NURVALA BUCH-HAM] Lambui, Orryani; Sembiring, Langkah; Rahayu, S.
Natural Science: Journal of Science and Technology Vol 4, No 2 (2015): Volume 4 Number 2 (August 2015)
Publisher : Univ. Tadulako

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

Abstract

Bakteri asam laktat (BAL) yang dapat menghasilkan ? & ?-galaktosidase telah diisolasi dari produk fermentasi kulit buah cempedak (mandai) dan bunga tigarun (jaruk) menggunakan medium MRS dengan metode enrichment dilanjutkan dengan surface spread plate dan dimurnikan dengan metode streak plate. Tahapan isolasi berhasil mengisolasi 73 isolat penghasil asam, kemudian di screening awal berdasarkan karakter kunci BAL. Diperoleh 26 isolat BAL dan dikarakterisasi berdasarkan kemampuannya dalam menghasilkan ? dan ?-galaktosidase melalui pengukuran aktivitas enzim dalam menghidrolisis subsrat p-nitrophenyl-?-D-galactopyronoside (pNPG) dan o-nitrophenyl-?-D-galactopyronoside (oNPG). Dua isolat terpilih yaitu OLM_10 memiliki nilai aktivitas ?-galaktosidase tertinggi yaitu 5,07 U/ml dan aktivitas ?-galaktosidase 0,43 U/ml dan OLJ_25 memiliki nilai aktivitas ?-galaktosidase 4,11 U/ml dan & aktivitas ?-galaktosidase tertinggi 1,06 U/ml. Berdasarkan karakterisasi terhadap 2 isolat terpilih didapatkan hasil bahwa isolat OLM_10 diidentifikasi sebagai anggota spesies Streptococcus thermophilus dan isolat OLJ_25 sebagai anggota spesies Lactobacillus plantarum.
Diversity of D-loop mitochondrial DNA (mtDNA) sequence in Bali and Sumba Ongole cattle breeds Jakaria, J.; Musyaddad, T.; Rahayu, S.; Muladno, M.; Sumantri, C.
Journal of the Indonesian Tropical Animal Agriculture Vol 44, No 4 (2019): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.44.4.335-345

Abstract

This study aimed to investigate the diversity of the complete sequence of D-loop mitochondrial DNA (mtDNA) in Bali and Sumba Ongole (SO) cattlebreeds. A total of 24 blood samples were collected from Bali cattle (19 heads) and SO cattle (5 heads), and were extracted and then analyzed to obtain the sequence of D-loop mt DNA.Multiple alignments of the whole sequence of D-loop mtDNA were determined using clustal W. Genetic distance was calculated using a p-distance method, while the genetic tree was constructed using neighbor-joining (NJ) based on MEGA 6. Haplotype number, haplotype diversity (Hd) and nucleotide diversity (Pi) were analyzed using DnaSP version 6. As a result, the sequence of D-loop mtDNA in Bali cattle (921-1119 bp) and SO cattle (913 bp) was reported to have 8 and 4 haplotypes. Hd and Pi of Bali cattle reached 0.625±0.139 and 0.0266±0.0145, respectively, which wwere different from that of SO cattle, namely 0.900±0.1610 and 0.0064±0.0015, respectively. Specifically, we found 22 bp-repetitive nucleotide in Bali cattle, existing 3-9 times with a length of 66-198 bp present in D-loop mtDNA. This unique feature did not exist in SO cattle. Genetic distance and genetic tree determined according to sequence in hypervariability (HV-1) region of D-loop mtDNA (166 bp) resulted in satisfied separation, successfully classifying Bos javanicus, Bos indicus, and Bos taurus cluster.
SINGLE NUCLEOTIDE POLYMORPHISMS OF LIPOPROTEIN LIPASE GENE AND ITS ASSOCIATION WITH MARBLING QUALITY IN LOCAL SHEEPS Hidayati, H.; Sumantri, C.; Noor, R. R.; Priyanto, R.; Rahayu, S.
Journal of the Indonesian Tropical Animal Agriculture Vol 40, No 1 (2015): March
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.40.1.1-10

Abstract

Lipoprotein lipase (LPL) is a key enzyme that plays in metabolism and transport lipoprotein andtherefore has an influence on blood triglyceride levels. LPL controls triacylglycerol partitioning betweenadipose tissue and muscle that increases fat storage or provides energy in the form of fatty acids formuscle growth. The research was aimed to explore Single Nucleotide Polymorphisms of LPL gene andto associate SNP with marbling quality. A total of 66 genomic DNAs consisted of sumatera thin-tail edsheep (50 heads) and garut sheep (16 heads) were used in this study. Polymerase Chain Reaction wasused to amplify genomic DNA and direct sequencing method was to identify polymorphism sequences.The sequences were analyzed with Bio Edit and MEGA 5.2. The BLAST sequence was obtained fromgene bank X.68308.1. The association between the genotype and marbling quality was analyze by oneway ANOVA and further between mean differences were tested using least sgnificant difference. Theresults showed that 3 novel SNPs i.e. insertion g.26>C; insertion g.27> G and c.192T>C on garut sheepand a SNP insertion g.26>C/G on sumatera thin-tail ed sheep. The diversity of LPL gene at c.192T>Cwas associated with heneicosanoic acid, whereas TT genotype (0.04%) was higher than CC (0.03%) andCT (0.02%).
Enhancement of High School Students’ Scientific Literacy Using Local-Socioscientific Issues in OE3C Instructional Strategies Saija, M.; Rahayu, S.; Fajaroh, F.; Sumari, S.
Jurnal Pendidikan IPA Indonesia Vol 11, No 1 (2022): March 2022
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v11i1.33341

Abstract

Guided inquiry learning has improved scientific literacy skills in various studies. This fact, however, contradicts new findings from the 2015 PISA survey. The research aims to assess inquiry-based OE3C learning methodologies that incorporate local socioscientific issues (SSI) to improve students’ scientific literacy. The research method used quantitative and qualitative methods to evaluate the planned strategy for teaching thermochemistry and rate reactions. The local SSI-based OE3C was used in a sixteen 90-minute lesson with 72 eleventh-grade students (experimental group) at an Indonesian public high school. A control group of 68 students from the same school was taught using guided inquiry learning. The experimental group received a 17-item questionnaire on students’ opinions of the instructional process using the OE3C based on local SSI and a 24-item scientific literacy test (Cronbach alpha = 0.717) from pretest and posttest. The control group also received the scientific literacy tests from pretest and posttest. The finding shows that OE3C learning based on SSI effectively enhances students’ scientific literacy skills. These findings are consistent with the results of the student perception questionnaire, which are supported by semi-structured interview findings 7.78% of students are highly pleased to learn using local SSI-based OE3C learning, and 95.83% of students think that learning to use local SSI-based OE3C learning steps helps them gain a better knowledge of the material. The findings of this study suggest that local SSI should be integrated into chemistry classes to help students build scientific literacy skills.
The Effectiveness of Creative Problem Solving-Flipped Classroom for Enhancing Students' Creative Thinking Skills of Online Physics Educational Learning Rahayu, S.; Setyosari, P.; Hidayat, A.; Kuswandi, D.
Jurnal Pendidikan IPA Indonesia Vol 11, No 4 (2022): December 2022
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v11i4.39709

Abstract

Physics science differs from other educational programs. As a natural science subject, this study program has many mathematical formulas, complex scientific laws, theorems, and scientific postulates. This study program needs creative thinking skills since physics learning is related to creativity in solving scientific problems. CPS (Creative Problem Solving) and flipped classrooms are some efforts to increase creative thinking skills. In Indonesia, COVID-19 is the main reason for conducting online learning. However, there is no supporting information about the effectiveness of CPS and flipped classrooms as methods for online physics learning in university. Thus, this study aims to identify the effectiveness of CPS–flipped classrooms assisted by videos in enhancing university students' creative thinking skills for online learning. The study participants were university students from the Physics Education Study Program (population = 66 students, random cluster sampling for the sampling method) of Mataram University. They were divided into the control and experimental or treatment groups. This study used a pre-test and post-test group design (seven description questions). All questions were validated and reliable. All data were analyzed using an N-gain score and t-test. The results show that the N-gain score is in the medium zone. The data were normally and homogeneously distributed. The analysis result using the t-test shows that the addition of flipped classrooms is more effective than the control group (CPS only). CPS-flipped classroom performs better than CPS, proving the ability of flipped classrooms as the alternative method in online learning.
Co-Authors A. Cahyarini, A. A. Hidayat Aditya, E. L. Afnan, R. Ali Alamsyah Kusumadinata Apriningrum, Nelly Asep Baihaqi, M. BATA, M. C. SUMANTRI Chairudin Chairudin D. A. Astuti Duldjaman, M. F. Fajaroh, F. Gopar, R. A. H. Hidayati, H. Hanibal, M. V. Hartoyo, B. Hasan, M. R. A. Jakaria Jakaria Jamil, S. Kuswandi, D. LANGKAH SEMBIRING M. Yamin M., FITA Ma'ani, A. Meigyantoko, D. Mulyono, R. H. Musyaddad, T. Nurmalasari Nurmalasari Orryani Lambui R. Priyanto R. R. Noor, R. R. Rahayu, Maria Alia Ratnamulyani, Ike Atikah Renata, M. Rimbawanto, E. A. Saija, M. Setyosari, P. Sudrajat, A. Sumari, S. Sunando, H. Tri Rachmanto Prihambodo Ulya, Neng Umam, R. Z. Y. N. Pratiwi, Y. N. Yahmin Yahmin