scholarly journals Pengaruh Penambahan Hidroksiapatit dari Cangkang Telur Ayam Terhadap Kekerasan Permukaan GIC

2016 ◽  
Vol 5 (2) ◽  
pp. 8
Author(s):  
Putri Ajri Mawadara ◽  
Martha Mozartha ◽  
Trisnawaty K
Keyword(s):  
Dental Materials ◽  
Surface Hardness ◽  
T Test ◽  
Control Group ◽  
System A ◽  
Significant Difference ◽  
Calcium Source ◽  
Chicken Eggshell ◽  
Restorative Dental Materials ◽  
Experimental Group

Hydroxyapatite (HA) is a bioceramic with excellentbiocompatible properties, and composition and crystal structure similar to apatite in the human dental structure and skeletal system. A number of researchers have attempted to evaluate the effect of the addition of HA powders to increasemechanical properties of restorative dental materials. In this study, HA was synthesized using chicken eggshell as calcium source for synthesizing HA by using precipitation technique. The aim of this study was to determine the effect of incorporation of eggshell-derived HA on the surface  hardness GIC (Fuji IX GP). Specimens were divided into two groups: group GIC without incorporation of HA as control group (n = 16) and group GIC with incorporation of 5% HA as experimental group (n = 16). Total of specimens were 32 cylinders 5mm diameter and 2mm height. Surface hardness GIC was measured with vickers microhardness tester. Data wasanalyzed by unpaired T-test. The mean of surface hardness for GIC control group was 51.37 ± 1,63VHN and the experimental group was 56.60 ± 1,22HVN. The results T-test showed a significant difference between groups (p<0.05). It can be concluded thatincorporation of eggshell-derivedHA could increasesurface hardness of GIC.

scholarly journals Text-based Character in Teaching Reading: Do Students Can Achieve Significant Result in Reading Test?

2021 ◽  
Vol 3 (1) ◽  
pp. 21-28
Author(s):  
Hasan Hasan ◽  
Andi Sadapotto ◽  
Muhammad Hanafi ◽  
Usman Usman
Keyword(s):  
Alternative Hypothesis ◽  
T Test ◽  
Reading Test ◽  
Control Group ◽  
Significant Difference ◽  
Good Classification ◽  
Post Test ◽  
The Mean ◽  
And Control ◽  
Experimental Group

This quasi-experimental study involves the experimental and control group which consist of 60 students in first year of SMA Muhammadiyah Sidenreng Rappang   2019/2020 academic year.  The reading test is used to collect data to find out do the students can achieve significant result in reading test using Text-based Character. Based on the result the mean score of the experimental group pre-test was 72.67 and classified into good classification, while the control group was 69.63 classified into good. The mean score of the post-test after treatment for the experimental group was 82.43 (very good) while the control group was 76.53, (good) classification still.  The researcher found that the T-table is higher than the t-test (α) (1.659<2.021). It means that there is a significant difference in the pre-test of the control and experimental group, while in post-test of an experimental and control group, the researcher finds that the T-test is higher than the alpha and previous score in the the pre-test (α) (3.089>2.021). The degree of freedom is 58. This study reveals that the alternative hypothesis (H1) was accepted, and the null hypothesis (H0) was rejected. This is means that the use of Text-based Characters can improves students' reading skills in significant way.

scholarly journals THE EFFECT OF SHORT MESSAGE SERVICE (SMS) TEXTING ON MEDICATION ADHERENCE AMONG TUBERCULOSIS PATIENTS

2019 ◽  
Vol 13 (1) ◽  
pp. 49
Author(s):  
Yunus Adhy Prasetyo
Keyword(s):  
Medication Adherence ◽  
Short Message Service ◽  
T Test ◽  
Control Group ◽  
Short Message ◽  
Tuberculosis Patients ◽  
The Public ◽  
Significant Difference ◽  
Message Service ◽  
Experimental Group

The study was conducted to examine the effect of Short Message Service (SMS) Texting on medication adherence among tuberculosis patients. 68 persons diagnosed with tuberculosis and registered in the public health center in Klari, Karawang, West Java, Indonesia, were randomly appointed to an experimental or control group; 34 persons assigned to each group. Participants in the experimental group received routine SMS Texting, while those in the control group receive none. Data were analyzed using Dependent t-test and Independent t-test. The results indicated that after participating by receiving SMS texting, there was a significant improvement in medication adherence in TB patients in the experimental group, which was shown by significant difference in mean score of medication adherence. In addition, after participating in the program, there was a meaningful difference in mean scores of medication adherence between the experimental group (X=6.38, SD=0.85) and the control group (X=3.64, SD=1.04), p<0.01. The SMS Texting method appears to be effective in improving medication adherence among TB patients.

scholarly journals Use of Maple Software to Reduce Student Teachers’ Errors in Differential Calculus

2021 ◽  
Vol 4 (3) ◽  
pp. 32-46
Author(s):  
Sallah E.K. ◽  
Joshua K.S. ◽  
Alex O.
Keyword(s):  
Student Teachers ◽  
Differential Calculus ◽  
Teaching And Learning ◽  
Data Gathering ◽  
Simple Random Sampling ◽  
T Test ◽  
Control Group ◽  
Control Group Design ◽  
Significant Difference ◽  
Experimental Group

The study was conducted on the use of Maple software to reduce student teachers’ errors in Differential Calculus at Evangelical Presbyterian College of Education, Volta Region - Ghana. The research design for the study was quasi-experimental non-equivalent control group design. Convenience and simple random sampling techniques were employed to obtain a sample of 104 student teachers, which comprised 53 student teachers in the control group and 51 in the experimental group. Test items were the instruments used for data gathering. Descriptive, paired samples t-test and independent samples t-test were used in analyzing data. Descriptive content error analysis revealed that student teachers committed many conceptual, procedural and technical errors when solving tasks in the differential calculus. The results also indicated that there was a statistically significant difference between student teachers’ of the experimental group exposed to the use of Maple software in learning differential calculus to control groups exposed to traditional methods. Consequently, it was recommended that Maple assisted instruction be incorporated in the teaching and learning of differential calculus in the school; and also there is the need for the mathematics teachers in the school to employ blended teaching approaches, in which Maple software are used simultaneously to enhance teaching of mathematics concepts.

Effectiveness of Video Lecture Material as Instructional Tool for a Statistics Class

2014 ◽  
Vol 10 (1) ◽  
Author(s):  
CAMILA L. LIKIT ◽  
RENAN P. LIMJUCO
Keyword(s):  
Experimental Design ◽  
T Test ◽  
Control Group ◽  
Instructional Tool ◽  
Video Lecture ◽  
Lecture Material ◽  
Lecture Method ◽  
Significant Difference ◽  
Quasi Experimental ◽  
Experimental Group

The quest for better strategies in teaching is a never-ending process. This scenario is heightened more by the myriad online instructional materials fit for classroom use. The study aimed to determine the effectiveness of video lecture materials for statistics proficiency of first year students of Davao Doctors College.The researchers employed quasi-experimental design that involved purposively chosen 31 students for the control group and 26 students for the experimental group. The control group received traditional instruction while the experimental group utilized video lecture materials as the instructional tool. The questionnaire consisted 50 multiple choice items and established a reliability index of .82. This investigation used t-test analysis to establish the same level of statistics proficiency among the students before the conduct of the study. The study concluded that both learning strategies were effective in teaching students the basic concepts of statistics as indicated by the significant improvement of their pre-test to posttest scores. Although the posttest results of the students who were taught using video lecture materials were higher than those supervised using lecture method, the significance of this difference was never established. Thus, the use of video learning material as an instructional tool in statistics is equally effective with the traditional lecture method. Keywords - Mathematics education, video lecture material, effectiveness, statisticsproficiency, quasi-experimental design, significant difference, t-test, Philippines

The Effects of Using Instructional Conversation Method on Oral Autonomy of Iranian Intermediate EFL Learners

2016 ◽  
Vol 6 (6) ◽  
pp. 1191
Author(s):  
Sahar Ghaffari ◽  
Mohammad Ali Fatemi
Keyword(s):  
Proficiency Test ◽  
Role Playing ◽  
T Test ◽  
Control Group ◽  
Instructional Conversations ◽  
Efl Learners ◽  
Significant Difference ◽  
Instructional Conversation ◽  
The Impact ◽  
Experimental Group

This study was conducted with the aim of investigating the impact of instructional conversations on oral autonomy of Iranian English as Foreign Language (EFL) learners. Forty-nine Iranian intermediate EFL learners from three language institutes in Sarakhs were selected as the participants of the study based on their scores in Nelson Proficiency Test. Administering Nelson General Proficiency Test, participants were measured to make sure they are homogeneous. These participants were randomly assigned into to control and experimental groups.  Participants in both groups sat for Learner Oral Autonomy Questionnaire with some modifications from Kashefian's learner autonomy questionnaire (2002). Results of independent samples t-test lack of any significant difference between the two groups in oral autonomy at the outset of the study. Throughout the study which lasted for 12 sessions participants in experimental group received the treatment, instructional conversations, as a tool for teaching speaking materials. Participants in the control group were taught the same materials as those practiced in the former group through such techniques as role playing, peer dialogues, and oral presentations. Finally, the posttest being the same as the pretest was administered. Results of independent samples t-test showed that the experimental group significantly outperformed the control one in Oral Autonomy Questionnaire. The present findings provide pedagogical implications for employing instructional conversation in EFL speaking classrooms.

scholarly journals TEACHING READING COMPREHENSIN OF SPOOF TEXT BY USING JIGSAW LEARNING MODEL TO THE ELEVENTH GRADE STUDENTS AT SMA NEGERI 13 PALEMBANG

2019 ◽  
Vol 3 (1) ◽  
pp. 335
Author(s):  
Sri Yuliani
Keyword(s):  
Reading Comprehension ◽  
Learning Model ◽  
T Test ◽  
Control Group ◽  
Teaching Reading ◽  
Significant Difference ◽  
Post Test ◽  
Written Test ◽  
And Control ◽  
Experimental Group

The objective of the study is to find out whether it is effective or not using jigsaw learning model in teaching reading comprehension of  spoof text to the eleventh grade students at SMA Negeri 13 Palembang. In this study, the researcher used experimental method. The population of this study is all the eleventh grade students at SMA Negeri 13 Palembang with the total numbers of students was 392. Therefore, the sample of the study is 72 students consist two classes,namely: 36 students for control group and 36 students for experimental group. The sample was taken by using non purposisve random sampling method. The data collected by using written test consist of 30 questions and the type of questions is multiple choice.  The result of the test was analyzed by using t-test which were pair sample t-test and independent sample t-test was known as: mean of post test in expermental group was 72.22 higher than past test mean score of control group was 58.64. Furthermore, the result of t-obtained was 6.132 and t-table was 2.030, it shows that t-obtained was higher than t-table. From the explanation above, there were significant difference between the experimental group that have been taught by using jigsaw learning model and control group that was not taught using treatment. It means that, Ho was rejected and Ha was accepted. It was concluded that it was effective of using jigsaw learning model to teach reading comprehension of spoof text to the eleventh grade students at SMA Negeri 13 Palembang.

scholarly journals THE USE OF GENRE-BASED APPROACH TO IMPROVE WRITING SKILL IN NARRATIVE TEXT AT THE ELEVENTH GRADE STUDENTS OF SMA ETHIKA PALEMBANG

2019 ◽  
Vol 3 (1) ◽  
pp. 280
Author(s):  
Haryanti Haryanti ◽  
Farnia Sari
Keyword(s):  
T Test ◽  
Narrative Text ◽  
Control Group ◽  
Writing Style ◽  
Narrative Texts ◽  
Paired Sample ◽  
Writing Test ◽  
Significant Difference ◽  
Writing Skill ◽  
Experimental Group

Objective of this research was to find out significant difference of reading achievement between students The objective of this study was to find out whether or not there was a significant improvement in students' skill in writing narrative texts after they were taught by using Genre-Based Approach. The method of this study was experimental design. The experimental group received a genre-based approach while the control group received the conventional method. The population was the eleventh-grade students of SMA Ethika Palembang. The sample was 60 students which was selected by cluster random technique . The data collection was a writing test. The data were analyzed by using paired sample t-test and independent sample t-test. It indicated that there was a significant difference in writing skill between the students who were taught using GBA and those who were not.  Based on the result of data, it was interpreted that all aspects of writing are increased after taught by using GBA Approach. The best-achieved writing aspect was style and quality expression. It assumed the use of words: phrases, sentences, and paragraphs in expressing the ideas were clear and effective in writing style. Further, the study provided evidence for the effectiveness of using the genre-based approach in improving the students' writing skill in narrative text. 

scholarly journals The Effectiveness of Using Inductive Method in Teaching English Grammar

2019 ◽  
Vol 7 (1) ◽  
pp. 98
Author(s):  
Ade Novea Retty ◽  
Martono Martono ◽  
Teguh Sarosa
Keyword(s):  
T Test ◽  
Inductive Method ◽  
Control Group ◽  
English Grammar ◽  
Significant Difference ◽  
Deductive Method ◽  
Eighth Grade Students ◽  
Class Viii ◽  
The Mean ◽  
Experimental Group

This article presents the research results which are: (1) there is a significant difference in grammar mastery between students taught using Inductive Method and students taught using Deductive Method; (2) Inductive Method is more effective than Deductive Method. The research method used in this research is an experimental design. This research was conducted at SMP Negeri in Surakarta in the academic year of 2017/2018. The research population is the eighth-grade students. The samples are class VIII A as the experimental group consisting 28 students and class VIII B as the control group consisting 28 students. The research instrument used to collect the data is a test. The data were analyzed by using t-test formula. The computation of the t-test shows that t observation (t<sub>o</sub>) = 2.284 is higher than t table <sub>(54. 0.05)</sub> = 2.0048. It can be concluded that there is a significant difference in grammar mastery between the students taught using Inductive Method and the students taught using Deductive Method. The mean score of the experimental group is 58.29, while the mean score of the control group is 46.86.  It can be concluded that Inductive Method is more effective than Deductive Method to teach English grammar.

scholarly journals USING PEER ASSISTED LEARNING STRATEGY ON READING COMPREHENSION OF ANALYTICAL EXPOSITION

2019 ◽  
Vol 12 (01) ◽  
pp. 42-56
Author(s):  
Darmawan Budiyanto
Keyword(s):  
Reading Comprehension ◽  
Experimental Method ◽  
Learning Strategy ◽  
T Test ◽  
Control Group ◽  
Peer Assisted Learning ◽  
Group Test ◽  
Significant Difference ◽  
Quasi Experimental ◽  
Experimental Group

The objective of this study was to find out whether or not there was any significant difference on reading comprehension of analytical exposition that were taught by using Peer Assisted Learning strategy (PALS) and those who were not, and to find out whether or not it was effective to use PALS on reading comprehension. This study used quasi experimental method. 78 students was taken as sample, consists of 39 students XI IPS 3 as experimental group and XI IPS 4 as control group. Test was used in collecting data as pretest and posttest. To verify the hypothesis, the result of independent sample t-test found that t-obtained (11.077) was higher than t-table (1.9917) with df(=76), and the significance 2-tailed was 0.000. It means that there was any significant difference on reading comprehension that were taught by using PALS and those who were not, and also it was effective to use PALS.

scholarly journals The Effect of Culture – Based Approach in Improving Students’ Reading Comprehension on Spoof Text

2020 ◽  
Vol 9 (2) ◽  
pp. 162-171
Author(s):  
Rudi Suherman ◽  
Ana Yusyfiana
Keyword(s):  
Reading Comprehension ◽  
Percent Level ◽  
T Test ◽  
Control Group ◽  
Significant Difference ◽  
Post Test ◽  
The Mean ◽  
Level Of Significance ◽  
Alternative Choice ◽  
Experimental Group

This research was intended to investigate the effect of a culture-based approach in improving students’ reading comprehension on spoof text. For that purpose, a true experimental study was applied to the eleventh-grade students of SMAN 1 Soreang. The sample of this study was 88 students from that school. These students were divided equally into the control and experimental group. The experimental group was given the Culture-Based Approach (CBA) as the treatment in comprehending the text.  The students’ scores of pre-test and post-test from both groups were statistically analyzed and compared by the T-test. The findings could be summarized that generally, students from the experimental group gained better achievement than from the control group on their post-test scores. The data analysis also showed that there was a significant difference between the mean score of the pre-test (53.45) and the post-test (58.39.). Furthermore, the result of the t-test (5.707) was relatively higher than the t- table (2.018) for a 0.5 percent level of significance. It indicated that the students’ achievement was significantly improved after the treatment of using a Culture-Based Approach. Thus, it is recommended that a Culture-Based Approach should be considered as an alternative choice for English teachers in teaching spoof text.

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