scholarly journals Pengaruh Pendekatan Saintifik dalam Proses Belajar Mengajar Siswa Kelas VIII Materi Lingkaran

2020 ◽  
Vol 7 (2) ◽  
pp. 65-74
Author(s):  
Maryani Maryani ◽  
Herlina Effendi ◽  
Henky Sabantaro
Keyword(s):  
Class A ◽  
Learning Mathematics ◽  
Two Samples ◽  
Significant Difference ◽  
Scientific Approach ◽  
Class B ◽  
Study Circle ◽  
Study Population ◽  
Class Viii ◽  
Approach Method

This study aims to determine students' learning outcomes who are taught using the scientific approach method in groups and not in groups. This research is quantitative. The study population was grade VIII students of SMP Negeri 03 Bengkulu City. In this study, sampling was carried out by purposive sampling because not all samples have criteria that match the phenomenon under study. The two classes chosen were Class VIII A and VIII B, each of which contained eight students. Each student gets material based on the same curriculum, the two samples in the same class, the teacher uses the same method, the characteristics of learning, and the students' initial abilities. Collecting data used in this study using observation and test questions. Based on the results of the above data using the non-parametric Mann Whitney Test, it was found that the results of learning mathematics in class A were greater with a mean Rank of 8.63, while in class B with a mean Rank of 8.38. Based on the output test statistics, it is known that the Asymp Sig. (2.talled) value is 0.916 <0.05. The hypothesis is accepted. It can be said that there is a significant difference in results between class A and class B with the effect of learning in the experimental class and the control class.Keywords: Scientific Approach, study, Circle

scholarly journals Development of Online Science Teaching Instrument Based on Scientific Approach Using PhET Simulation to Improve Learning Outcomes at Elementary School

2020 ◽  
Vol 1 (2) ◽  
pp. 90-107
Author(s):  
Taufik Adi Sarwoto ◽  
Budi Jatmiko ◽  
Elok Sudibyo
Keyword(s):  
Elementary School ◽  
Science Teaching ◽  
Learning Outcomes ◽  
Lesson Plan ◽  
Affective Domain ◽  
School Students ◽  
Class A ◽  
Significant Difference ◽  
Scientific Approach ◽  
Class B

The research aims to develop online science teaching instruments based on a scientific approach using a proper PhET simulation to improve learning outcomes for elementary school students. The developed equipment is the lesson plan, students’ activity sheet, learning materials, and assessment sheet of learning outcomes. The research plan is designed in One Group Pre-Test- Post-Test Design. The population in this study is all students of the fifth grade of State Elementary School Jagir I academic year 2019/2020. The results showed that there is a significant improvement in the results of online science studying through a scientific approach with the PhET simulation media. N-Gain value of class A is of 0.76 and class B is 0.70 with high criteria. The hypothesized test results showed no significant difference between class A and class B, student learning outcomes in the psychomotor area values class A in 80 when the average value of class B is 77.08, the learning results in affective domain values in class A is 80.00 in average and in class B is 80.31 with the 100% passing rate of the affective domain.

scholarly journals Correlation between Genotypic Diversity, Lipooligosaccharide Gene Locus Class Variation, and Caco-2 Cell Invasion Potential of Campylobacter jejuni Isolates from Chicken Meat and Humans: Contribution to Virulotyping

2009 ◽  
Vol 75 (13) ◽  
pp. 4277-4288 ◽  
Author(s):  
Ihab Habib ◽  
Rogier Louwen ◽  
Mieke Uyttendaele ◽  
Kurt Houf ◽  
Olivier Vandenberg ◽  
...  
Keyword(s):  
Campylobacter Jejuni ◽  
Genotypic Diversity ◽  
Chicken Meat ◽  
Pcr Screening ◽  
Class A ◽  
Invasion Potential ◽  
Cell Surface Carbohydrate ◽  
Significant Difference ◽  
Class B ◽  
Class C

ABSTRACT Significant interest in studying the lipooligosaccharide (LOS) of Campylobacter jejuni has stemmed from its potential role in postinfection paralytic disorders. In this study we present the results of PCR screening of five LOS locus classes (A, B, C, D, and E) for a collection of 116 C. jejuni isolates from chicken meat (n = 76) and sporadic human cases of diarrhea (n = 40). We correlated LOS classes with clonal complexes (CC) assigned by multilocus sequence typing (MLST). Finally, we evaluated the invasion potential of a panel of 52 of these C. jejuni isolates for Caco-2 cells. PCR screening showed that 87.1% (101/116) of isolates could be assigned to LOS class A, B, C, D, or E. Concordance between LOS classes and certain MLST CC was revealed. The majority (85.7% [24/28]) of C. jejuni isolates grouped in CC-21 were shown to express LOS locus class C. The invasion potential of C. jejuni isolates possessing sialylated LOS (n = 29; classes A, B, and C) for Caco-2 cells was significantly higher (P < 0.0001) than that of C. jejuni isolates with nonsialylated LOS (n = 23; classes D and E). There was no significant difference in invasiveness between chicken meat and human isolates. However, C. jejuni isolates assigned to CC-206 (correlated with LOS class B) or CC-21 (correlated with LOS class C) showed statistically significantly higher levels of invasion than isolates from other CC. Correlation between LOS classes and CC was further confirmed by pulsed-field gel electrophoresis. The present study reveals a correlation between genotypic diversity and LOS locus classes of C. jejuni. We showed that simple PCR screening for C. jejuni LOS classes could reliably predict certain MLST CC and add to the interpretation of molecular-typing results. Our study corroborates that sialylation of LOS is advantageous for C. jejuni fitness and virulence in different hosts. The modulation of cell surface carbohydrate structure could enhance the ability of C. jejuni to adapt to or survive in a host.

scholarly journals COMPARISON OF STUDENT LEARNING BY USING THE STRATEGY HYPNOTEACHING CTL REACT AND MATERIALS ON RELATIONS AND FUNCTION IN CLASS VIII MTSN MULAWARMAN Banjarmasin

2016 ◽  
Vol 2 (2) ◽  
Author(s):  
Lestari Pramita
Keyword(s):  
Student Learning ◽  
Learning Outcomes ◽  
Mathematics Learning ◽  
Field Research ◽  
Research Field ◽  
Significant Difference ◽  
Study Population ◽  
Class Viii ◽  
And Function ◽  
Academic Year

This study was conducted to examine the differences in student learning outcomes using hypnoteaching the REACT strategy and CTL on material relations and functions. This research is a form of field research (Field Research) with the experimental method. The study population was a class VIII student MTsN Mulawarman Banjarmasin academic year 2015/2016 the number of students as many as 206 students. Samples peneitian is class VIII VIII C and E. Based on the results of the study there was no significant difference mathematics learning outcomes of students who are taught using methods hypnoteaching the REACT strategy and using hypnoteaching in CTL strategy.                                                Keywords: hypnoteaching, REACT, CTL, learning outcomes

scholarly journals Mathematical physics e-module: A study of students' perception based on gender

2021 ◽  
pp. 209-226
Author(s):  
Astalini Astalini ◽  
Darmaji Darmaji ◽  
Dwi Agus Kurniawan ◽  
Nadia Natalia Simamora
Keyword(s):  
Gender Differences ◽  
Data Analysis ◽  
Physics Education ◽  
Student Perception ◽  
Mathematical Physics ◽  
Class A ◽  
Significant Difference ◽  
Class B ◽  
Research Population ◽  
And Gender

Student’s perception is the student's assessment of something or information. The objective of this study was to discover how students' general perceptions and gender differences in electronic modules of mathematical physics. The research type is survey-based research with quantitative approach. The research population consists of physics education students from Universitas Jambi with the sample of 80 students from class A and class B. The data analysis techniques used in the study are descriptive statistics analysis and inferential data analysis using t-tests. The results showed that, overall, students have a positive perception with a Sig. (2-tailed) value of 0.011 < 0.005, which means that there is a significant difference in students’ perception. The perception of class A students with gender differences has a Sig. (2-tailed) value of 0.003, while the grade B students have a Sig. (2 tailed) values of 0.020 and 0.013. This means that class A and classs B students have a discernible difference of perception. Student’s perception may be used as a determining factor in the choice of learning materials. This research can be used as a guideline for the development of student perception assessment in the electronic module of Mathematical Physics in the future. The update of this study aims to compare students' perceptions of the overall online module of mathematics and gender differences.

scholarly journals PENGEMBANGAN LEMBAR KERJA SISWA DENGAN STIKER BERGAMBAR PADA MATERI LINGKARAN

2018 ◽  
Vol 8 (1) ◽  
pp. 1
Author(s):  
Dian Kurniawati ◽  
Habib Husnial Pardi ◽  
Alfira Mulya Astuti
Keyword(s):  
Test Sample ◽  
Posttest Score ◽  
T Test ◽  
Average Percentage ◽  
Stage Of Development ◽  
Learning Mathematics ◽  
Significant Difference ◽  
Class Viii ◽  
The Mean ◽  
Academic Year

Abstrak - Penelitian ini merupakan penelitian pengembangan yang bertujuan untuk mengembangkan media pembelajaran pada materi Lingkaran berupa Lembar Kerja Siswa (LKS) Matematika dengan Stiker Bergambar yang diperuntukan pada  siswa kelas VIII MTsN 3 Mataram tahun pelajaran 2016/2017. Pengembangan ini merujuk pada model pengembangan 4D (Define, Design, Develop, dan Dissemination) yang dikembangkan oleh S.Thiagarajan, Dorothy S. Semmel, dan Melvyn I. Semmel. Hasil penelitian pengembangan ini diperoleh sebagai berikut: Tahap pertama yaitu penilaian oleh 3 orang ahli meliputi ahli desain, ahli bahasa dan ahli materi. Rata-rata persentase penilaian ahli diperoleh 80%, yaitu 80% dari ahli desain, 85% dari ahli bahasa, 72% dan 81% dari ahli materi. Rata-rata penilaian ahli tersebut memenuhi kriteria “cukup valid” dan dapat digunakan dengan perbaikan sesuai revisi dari para ahli. Pada tahap uji terbatas, respon 9 siswa kelas VIII terhadap LKS diperoleh persentase sebesar 86% yang memenuhi kriteria “sangat valid/tuntas” dan dapat digunakan tanpa perbaikan. Pada tahap berikutnya yaitu uji pengembangan dengan 34 respon siswa kelas VIII diperoleh persentase sebesar 87% yang memenuhi kriteria “sangat valid/tuntas” dan dapat digunakan tanpa perbaikan. Selain dari respon siswa, keefektifan LKS matematika dengan stiker bergambar materi lingkaran juga dilihat dari hasil belajar siswa. Hasil rata-rata nilai pretest adalah 42,03, sedangkan hasil rata-rata nilai posttest adalah 74,65 yang sesuai dengan KKM yaitu 75. Selain itu terlihat perbedaan yang signifikan antara rata-rata nilai pretest dengan rata-rata nilai posttest. Hasil ini diperkuat dengan hasil perhitungan t-test sample related dengan thitung ≤ - ttabel yaitu -19.07 ≤ -2.034. Sehingga dari hasil tahapan yang ditempuh dengan hasil yang diperoleh, menunjukkan bahwa LKS matematika dengan stiker bergambar efektif dalam pembelajaran matematika materi lingkaran.Abstract - This research is a development research that aims to develop learning media on the material circle in the form of Student Worksheet (LKS) Mathematics with Sticker Picture that is intended for students of class VIII MTsN 3 Mataram academic year 2016/2017. This development refers to the 4D development model (Define, Design, Develop, and Dissemination) developed by S.Thiagarajan, Dorothy S. Semmel, and Melvyn I. Semmel. The results of this development study are obtained as follows: The first stage is assessment by 3 experts including design experts, linguists and material experts. The average percentage of expert judgments is 80%, 80% of design experts, 85% of linguists, 72% and 81% of material experts. The average expert's judgment meets the criteria "fairly valid" and can be used with revised fixes from experts. In the limited test phase, the response of 9 students of class VIII to LKS obtained a percentage of 86% that meets the criteria of "very valid / complete" and can be used without improvement. In the next stage of development test with 34 class VIII student responses obtained percentage of 87% that meet the criteria of "very valid / complete" and can be used without repair. Aside from the student's response, the effectiveness of LKS mathematics with stickers pictorial circle material is also seen from the student's learning outcomes. The average result of the pretest value is 42.03, while the mean posttest score is 74.65 corresponding to the KKM of 75. In addition, there is a significant difference between the average pretest value and the average posttest value. This result is reinforced by the result of t-test sample related with th ≤ - tt ie -19.07 ≤ -2.034. So from the results of the steps taken with the results obtained, indicating that LKS mathematics with an effective pictorial sticker in learning mathematics material circle

scholarly journals A COMPARATIVE STUDY BETWEEN FOUR CORNERS STRATEGY AND GROUP WORK STRATEGY ON STUDENTS’ SPEAKING ABILITY

PERADA ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 13-27
Author(s):  
Ferri Yonantha
Keyword(s):  
Group Work ◽  
Total Population ◽  
First Semester ◽  
Speaking Test ◽  
Class A ◽  
Significant Difference ◽  
Four Corners ◽  
Class B ◽  
The Mean ◽  
Academic Year

The present study is mainly aimed at comparing the use of Four Corners Strategy and Group Work Strategy on students’ speaking ability. It was encouraged by the low results of the students’ speaking ability. The research was carried out in a non-experimental form of comparative design that focused on quantitative approach. The total population of this study was 153 first semester students of State Islamic Higher College of Sultan Abdurrahman Kepulauan Riau in academic year 2017/2018. Meanwhile, the selected sample was 30 students (Class A) and 30 students (Class B). A speaking test was conducted after giving three meetings of treatment for both classes to measure their speaking ability. The results of the test were analyzed through compare means and t-test by using SPSS Statistics 20.0. As a result, it was found the mean score of the students taught by using Four Corners Strategy was higher than those taught by using Group Work Strategy. However, there was no significant difference between the use of Four Corners Strategy and Group Work Strategy on the students’ speaking ability improvement.

scholarly journals IMMATURE PLATELET FRACTION (IPF) DAN TROMBOPOIETIN DI SIROSIS HATI

2018 ◽  
Vol 19 (2) ◽  
pp. 112
Author(s):  
Esti Rohani ◽  
Yetti Hernaningsih ◽  
Suprapto Ma’at ◽  
Ummi Maimunah
Keyword(s):  
Liver Cirrhosis ◽  
Disease Severity ◽  
Clinical Problem ◽  
Serum Levels ◽  
Cross Sectional ◽  
Class A ◽  
Immature Platelet Fraction ◽  
Significant Difference ◽  
Class B ◽  
Major Clinical Problem

Liver cirrhosis remains a major clinical problem worldwide when associated with significant morbidity and mortality due toits complications. The presence of liver cirrhosis state affects the production of TPO influencing the process of thrombopoiesis. Thethrombopoiesis activity can be described by the Immature Platelet Fraction (IPF) value which is young platelets. The immature Plateletfraction value increases when platelet production enhances as well, on the contrary when the production declines, the IPF value is alsodecreased. This study was performed by cross-sectional method using 31 subject samples suffering from liver cirrhosis, consisting of ChildPugh score class A 2 samples (6.4%), Child Pugh score class B 9 samples (29%) and Child Pugh score class C 20 samples (64.6%). Theexamination of TPO levels was done by ELISA method using Humans TPO QuantikineR, the IPF value was examined using Sysmex XE-2100 Hematology Analyzer. The thrombopoietin serum levels in the samples ranged from 23.5 to 96.6 pg/mL with a mean of 45.1pg/mL.The immature Platelet Fraction values varied from 1.7% to 19.1% with a mean of 6.7%. From the statistical analysis, the levels of TPO andIPF at various degrees of the disease severity were not significantly different. There was no significant correlation between the TPO leveland IPF value, r = 0.038, p = 0.837. There was no significant difference between the TPO level and the IPF value in the splenomegaly andnonsplenomegaly state. In conclusion, based on this study no significant correlation was found between the IPF value with thrombopoietinserum levels, as well as the IPF and thrombopoietin levels, and there was no association with the disease severity.

Fostering Students’ Descriptive Text Writing Ability: Please Strategy Vs. Idea Details Strategy

2020 ◽  
Vol 8 (1) ◽  
pp. 34
Author(s):  
Windi Kurniati ◽  
M. Sayid Wijaya ◽  
Rohmatillah Rohmatillah
Keyword(s):  
Total Sample ◽  
Cluster Sampling ◽  
Writing Ability ◽  
Class A ◽  
Significant Difference ◽  
Class B ◽  
8Th Grade ◽  
Post Test ◽  
Static Group ◽  
Text Writing

  The aim of this research is to investigate whether is there a significant difference between the use of PLEASE Strategy and Idea Details Strategy in increasing students’ descriptive text writing ability. This research methodology used was a static group comparison. The population of this research was 8th-grade students of the second semester at SMP Negeri 2 Menggala. The total sample in this research was 64 students, chosen by using cluster sampling: VIII A as experimental class A taught by using PLEASE strategy and VIII B as experimental class B taught by using Idea Details strategy. Pre-test and post-test were implemented to collect the data. From the data analysis computed by using SPSS, it was found the result of independent sample t-test Sig. = 0.008 and α = 0.05. It meant that Ha was accepted. There was a significant difference between the use of PLEASE strategy and Ideas Details strategy in increasing students’ descriptive text writing ability.

مهارة الكلام منظور من عملية التعلم والتعليم في جامعة باتوسنجكر الاسلامية الحكومية سومطرى الغربية

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Suharmon Suharmon
Keyword(s):  
Teaching Strategies ◽  
Language Education ◽  
Arabic Language ◽  
Descriptive Statistics ◽  
Quantitative Approach ◽  
Motivation To Learn ◽  
Education Department ◽  
Class A ◽  
Class B ◽  
Speaking Skill

This research aims to obtain infomation about Arabic learning especially speaking skill in Arabic Language Education Department at IAIN Batusangkar. The research uses a quantitative approach. The instruments to collect the data are test and questionnaire. The data were analyzed using descriptive statistics. The results of the research state that the students’ speaking ability at class “ A “ are 28% low, 36% moderate, and 36% high. While, at class “B”, students’ speaking abilities are 36.4% low, 40,9% moderate, and 22.7% high. The cause of students’ low ability is the unappropriateness of teachers’ strategy in teaching speaking. There are about 96% students at class “A” agreed and 86.4% students at class “B” had similar answer. Another cause is students’ low motivation in learning. Class “A” students agreed for about 76% of them and 77% of class “B” students answered the same. From the finding, it can be concluded that the inability of students to speak Arabic can be overcomed by improving teaching strategies and encouraging maximum motivation  to learn Arabic.

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