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Dea Santika Rahayu
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ijose@untidar.ac.id
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INDONESIA
Indonesian Journal of Science and Education
Published by Universitas Tidar
ISSN : 25985213     EISSN : 25985205     DOI : https://doi.org/10.31002/ijose
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology Physics
Indonesian Journal of Science and Education published a scientific paper on the results of the study and review of the literature in the science and education. In detail, the scopes of this journal are research in 1) Science education; 2) Biology education; 3) Physics education; 4) Chemistry education; 5) Science Educational Technology; 6) Environmental science; 7) Physics; 8) Chemistry; and 9) Biology.
Arjuna Subject : Umum - Umum
Articles 94 Documents
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The Effect of Socio-Scientific Issue (SSI) Science Learning Based on The Decision Making Skills of Eight Grade Junior High School Student: PENGARUH PEMBELAJARAN IPA BERBASIS SOCIO-SCIENTIFIC ISSUE (SSI) TERHADAP KETERAMPILAN PENGAMBILAN KEPUTUSAN SISWA SMP KELAS VIII Erlia Narulita
Indonesian Journal of Science and Education Vol. 6 No. 2 (2022): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

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

Abstract

Decision-making skills are an activity to make the best decision from several alternative solutions offered with certain considerations. This study aims to examine the effect of Socio-Scientific Issue (SSI)-based science learning on the decision-making skilss of class VIII Junior High School students. The research method used is a quasy experiment with a non-equivalent control group design. The population in this study was class VIII SMP Negeri 7 Jember in the academic year 2021/2022. The selection of research samples using purposive sampling technique obtained class VIII B as the control class and class VIII E as the experimental class. The results of the analysis used the Independent Sample T-test with a significance value og 0.041 < 0.05. In addition, based on the N-Gain test in the control class the average N-Gain is 0.4233 with moderate criteria in the less effective category, while the average N-Gain in the experimental class is 0.5568 with moderate criteria being quite effective. Based on the results of the study, it can be concluded that there is a significant effect on Socio-Scientific Issue (SSI)-based science learning on the decision-making skills of class VIII Junior High School students. Analysis with the N-Gain test shows that SSI-based science learning is included in the category of being quite effective in learning with a precentation of 56 percent. Keywords: Science Learning, Socio-Scientific Issue, Decision-making Skills
Development of Comic-based Worksheet to Improve Learning Motivation and Critical Thinking Nadia Kusuma Ningrum; Ning Setiati; Bambang Subali
Indonesian Journal of Science and Education Vol. 6 No. 2 (2022): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v6i2.187

Abstract

Penelitian ini bertujuan untuk mendeskripsikan karakteristik LKPD, menguji kelayakan LKPD, menguji efektivitas LKPD terhadap minat belajar, menguji efektifitas LKPD terhadap berpikir kritis dan menguji respon siswa terhadap LKPD. Metode yang digunakan adalah Research and Development dengan model pengembangan 4D. Teknik pengumpulan data yang digunakan adalah tes, observasi, wawancara, dokumentasi, dan angket. Uji karakteristik LKPD diperoleh dari teori Sastrawan & Yenti (2020) dan kritik serta saran para ahli, uji kelayakan diperoleh dari angket ahli, uji minat belajar siswa diperoleh dari angket, uji berpikir kritis diperoleh dari hasil pre-test dan post-test, sedangkan respon siswa diperoleh dari angket respon siswa. Hasil penilaian dari ahli media sebesar 86% dengan kriteria sangat layak, ahli materi sebesar 88% dengan kategori sangat layak dan guru IPA sebesar 91% dengan kategori sangat layak digunakan. Berdasarkan hasil minat belajar kelas kontrol sebesar 75% dan kelas eksperimen sebesar 86,41% yang menunjukkan kategori sangat tinggi. Keterampilan berpikir kritis diperoleh nilai sig. (2-tailed) sebesar 0,000. Karena nilai sig. (2-tailed) sebesar 0,000 dimana < 0,05, dan uji N-gain terdapat perbedaan yaitu pada kelas eksperimen lebih tinggi daripada kelas kontrol. Hasil dari angket respon siswa rata-rata sebesar 93% dengan kategori sangat baik. Berdasarkan hasil penelitian dapat disimpulkan bahwa pengembangan LKPD yang dilengkapi komik dikategorikan layak dan efektif terhadap minat belajar dan berpikir kritis siswa.
Relationship Between Environmental Literacy With Self Efficacy in Biology Learning Class High School: Hubungan Literasi Lingkungan dengan Self Efficacy pada Pembelajaran Biologi kelas X SMA YaKuti Afifah Yakuti
Indonesian Journal of Science and Education Vol. 6 No. 2 (2022): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v7i1.204

Abstract

In the era of the industrial revolution 4.0, technology is developing more rapidly, which cannot avoid large energy needs. Using large amounts of energy results in exploiting energy sources and causes environmental damage. Implementing environmental education is one of the efforts to prevent environmental damage by fostering environmental literacy. Self-efficacy beliefs are important for students to deal with situations or problems. This type of research is quantitative correlation using Pearson Product Moment (PPM) correlation data analysis. This study explains the relationship between environmental literacy and self-efficacy in learning biology class X SMA. The sampling technique in this study is simple random sampling. The total sample size is 180 students of class X MIPA at SMA Negeri 14 Semarang. The results of the calculation of the Pearson Product Moment (PPM) correlation analysis using the IBM SPSS 22 application for windows obtained a count = 0.331 and the value of Sig. = 0.007. Value of Sig. Obtained <0.05, so Ha accepted that there is a relationship between environmental literacy and self-efficacy in learning biology class X SMA.
Gas Chromatography Mass Spectroscopy (GCMS) Qualitative Analysis for Morphine, Heroin and Codeine used in Doping Ayu Nala El Muna Haerussana; Mimin Kusmiyati; Irvan Herdiana
Indonesian Journal of Science and Education Vol. 7 No. 1 (2023): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v7i1.207

Abstract

Three types of doping drugs, morphine, heroin, and codeine were analyzed qualitatively in urine using GCMS: HP5MS column containing a nonpolar substance, phenylmethyl siloxane, with a temperature range of 90-250ºC and a rate of increase of 10ºC/minute. Diethyl ether was used to extract morphine, codeine, and heroin. The extractions were performed at pH 8, the organic phase was evaporated, followed by derivatization. Morphine and its derivatives were treated with a solution of N-methyl-N-trimethylsilyl-trifluoroacetamide and N-methyl-bis-trifluoroacetamide. The results of the gas chromatographic analysis showed that the retention times of morphine, heroin, and codeine the retention times were 8.01, 7.32, 6.21 minutes, while those of their derivatives were 8.10, 8.10, 7.95 minutes respectively. The identification of each drug using mass spectrometry revealed that their mass spectra were identical to the standard. The mass spectra of the derivatives: morphine-TMS and codeine-TMS showed a resemblance index of 93% respectively compound to the standard, with a detection limit of 2 ug/ml.
The Development of human insulin precursor expressed from P.pastoris-X33 in a 10L-fermenter Dian Japany Puspitasari
Indonesian Journal of Science and Education Vol. 7 No. 1 (2023): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v7i1.212

Abstract

Human insulin is a hormone that regulate blood glucose in human. Due to the vital role of insulin and the trend of diabetic case globally, insulin demand has been rise in the world. Indonesia as a country that had diabetic patient more than 10 million people in 2017 is still imported raw material of human insulin. The development of production process of human insulin is needed in order to support government objective to be independence in medicine aspect. Human insulin precursor (HIP) expressed from a Pichia pastoris X33/pD902-IP had been developed and optimised in a small scale. However, the scaling up in fermenter 10L has not been studied. Using a 10L-fermenter the fermentation system of P.pastoris X33/pD902-IP was developed. Fermentation done in 120 hours using a basal salt medium (half concentration) for the vegetative and induction media. To induce HIP expression, methanol is fed by pulse strategy with a gradient concentration 1-3% for 48 hours. The dry cell weight (DCW) and HIP titer were 72 g/L and 192 mg/L, respectively. This development is the first fermentation process of HIP in fermenter 10L in Indonesia.
Development of Five-Tier Instruments to Identify Students' Misconceptions about Centripetal and Centrifugal Force Widia Dina Oktavia Widia
Indonesian Journal of Science and Education Vol. 7 No. 1 (2023): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v7i1.215

Abstract

The purpose of the study was to determine the development process and the feasibility of a five-tier diagnostic test instrument to identify students' misconceptions about centripetal and centrifugal forces. This research is a type of Research and Development (R&D) with the development model used, namely the 4D (Four-D) development model. This study uses the R&D method because the results of this study are in the form of a diagnostic test instrument to identify misconceptions in the learning process, and to find out the main source of the causes of misconceptions. The results of the diagnostic test of students who have misconceptions about centripetal and centrifugal forces are 20.31%.The percentage of false positive is 9.62%, the false negative is 8.49 and the Lack of Knowledge is 16.97%. From the percentage results obtained that the false positive (FP) and false negative (FN) values ​​are valid because <10%.The results of the validity test on the instrument are said to be valid because >0.3 and the results of the reliability test are Cronbach's Alpha value obtained at 0.715 from 7 item questions. So this instrument can be said to be reliable because the Cronbach's Alpha value is classified as high based on the reliability criteria.
Pisang Nangka (Musa paradisiaca) As An Alternative Media For Aspergillus niger Growth Firdha Rachmawati; Budiman; Sisna Imalda; Lilis Puspa Friliansari
Indonesian Journal of Science and Education Vol. 7 No. 2 (2023): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v7i1.231

Abstract

Nangka banana (Musa paradisiaca) is one of the most popular bananas in Indonesia. Therefore, the production of waste will increase along with the use of bananas. Nangka banana peel and flesh can be used as an alternative media for mushroom growth because of its high carbohydrate content. The purpose of this study was to observe the growth of Aspergillus niger on alternative media made from nangka banana with concentrations of 8%, 9%, 10%, 11% and 12% and to determine the optimum variation and concentration of alernative media. Aspergillus niger was grown on nangka banana flesh media, nangka banana peel media and mix of nangka banana peel and flesh as well as PDA (Potato Dextrose Agar) media as a positive control using the single dot method. Colony diameter and pigmentation were observed for five days. The variation of nangka banana mix media with a concentration of 12% is the optimum variation and concentration to grow Aspergillus niger. Keywords: Alternative media, Aspergillus niger, nangka banana
Developing of E-Module Diversity of Living Things Around in Improving Ereadiness of Distance Learning Students Nuryunita Dewantari; Dwi Winarsih
Indonesian Journal of Science and Education Vol. 6 No. 2 (2022): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v6i2.266

Abstract

This study aims to determine the feasibility of the e-module on the diversity of living things around in increasing distance learning e-readiness for students. This study uses a research and development approach. The development model used in this study is the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The research instruments used were pretest questions, posttest questions and questionnaires. The questionnaire used is the e-module validation questionnaire and the practicality questionnaire. The e-module validation questionnaire was filled out by experts and the practicality questionnaire was filled out by students who had used the e-module. Based on the results of the validation analysis carried out by experts, an average value of 3.74 was obtained with valid criteria, indicating that the developed e-module is feasible for use in learning. In addition, based on the results of the practicality questionnaire analysis that has been filled in by students who have used the e-module with percentage of 79.2% is obtained which means that the e-module that has been developed is practical for use in distance learning.
Motivation of Prospective Science Teacher While Reading Texts as a Part of Self-Regulated Learning: Study on Critical-Argumentation Reading Activities Bambang Subali; Siswanto Siswanto; Hartono Hartono; Masturi Masturi
Indonesian Journal of Science and Education Vol. 7 No. 1 (2023): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v7i1.314

Abstract

Reading is an important activity that must be present in the science learning process, especially reading with meaningful activities, one of which is critical argumentation reading activity. Reading is very closely related to student motivation while reading. This motivation plays an important role in supporting the success of reading goals. So far, research related to students' reading motivation has rarely been carried out, especially for critical argumentation reading activities. Most of the research was conducted at the elementary and secondary school levels. Therefore, this research will be conducted with the aim of analyzing students' motivation while reading using critical argumentation activities. This study involved 83 science teacher candidate students. In practice, students were divided into three classes, namely group experimental class (N = 29), individual experimental class (N = 29), and control class (N = 25). The research was conducted using the think aloud protocol method, in which students were asked questions while reading the text, and recorded all the answers orally. The results showed that students' motivation during reading as part of a self-regulation strategy showed better results when students read using the critical argumentation reading model. In addition, students are able to carry out self-regulation strategies from a better motivational aspect if reading activities are carried out in groups.
Assessment of Factors Militating Against Agricultural Science Practical in Secondary Schools in Kwara State, Nigeria Ibrahim Oba
Indonesian Journal of Science and Education Vol. 8 No. 1 (2024): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v8i1.489

Abstract

This study assessed the factors militating against agricultural science practical in secondary schools in Kwara State, Nigeria. A descriptive survey research design was used, and a sample of 478 agricultural science teachers was selected using multistage sampling techniques. Five research questions were raised and answered while five null hypotheses were formulated and tested at 5% level of significance. Data was collected through a self-developed questionnaire and analysed using frequency count, percentage, mean, and Pearson-Product Moment Correlation. The findings revealed that insufficient human resources, negative attitudes of learners, limited time, financial resources, and inadequate infrastructure were significant challenges impeding the successful implementation of agricultural science practical in secondary schools. The study recommends among others that government should prioritize the recruitment of qualified and experienced agricultural science teachers to teach agricultural science practical in secondary schools.

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