scholarly journals Effect of Geogebra on Pre-Service Teachers' Achievement and Perception of Circle Theorems at E. P. College of Education, Bimbilla-Ghana

Author(s):  
Anas Seidu Salifu

The study determined the effects of Geogebra on pre-service teacher's achievement and perception in circle theorems. The study was carried out in Evangelical Presbyterian (E.P.) College of Education, Bimbilla. Three research questions were formulated to guide the study. A sample size of 88 pre-service teachers (PSTs) was used. The control and experimental groups had 45 and 43 pre-service teachers respectively. The study used a quasi-experimental design. Data were collected from the subjects and analyzed quantitatively using SPSS version 18 on the close-ended questionnaire and the achievement pre-test and post-test. The pretest and post-test were analyzed using an independent sample t-test while the perception questionnaire used percentages, mean, and standard deviation in the analysis. Results from the study revealed that students taught circles theorem with Geogebra teaching strategy achieved a higher mean score than those taught through the conventional method with large effect size. The experimental group showed a positive interest in the Geogebra teaching strategy of teaching circles. The paired sample t-test also confirmed that the experimental group gained a mean difference of 9.83 in post-test with a large effect size too. The study recommends the integration of Geogebra into the teaching of circle concepts and theorems at the colleges of education in Ghana.

2021 ◽  
Vol 10 (2) ◽  
pp. 196
Author(s):  
Ellysa Verdyana ◽  
Antonius Johanes Tjahjoanggoro

Hasil analisis kebutuhan pada komunitas kepemudan X menunjukkan kurangnya self dan social awareness, solidaritas dan tenggang rasa, serta manajemen konflik yang belum efektif sehingga berdampak negatif pada kesolidan unit komunitas. Penelitian ini menguji efektivitas pelatihan yang disusun berdasarkan aspek emotional intelligence (Goleman, 2001). Penelitian ini menggunakan metode quasi-experimental one group pre-test post-test design. Kohesivitas diukur menggunakan Group Environment Questionnaire (Carron et al., 1985). Pelatihan ini diikuti oleh 14 peserta. Evaluasi dilakukan pada level reaction, learning, dan behavior. Data kuantitatif dianalisis menggunakan paired sample t-test (t = -7.311, p < 0.05). Analisis effect size Cohen’s D menghasilkan nilai d = 1.033 (large effect size). Kesimpulan penelitian menunjukkan bahwa pelatihan emotional intelligence terbukti efektif secara signifikan meningkatkan kohesivitas pada komunitas kepemudaan X.


2017 ◽  
Vol 1 ◽  
pp. 54
Author(s):  
Arita Destianingsih ◽  
Ari Satria

The aim of this study was to know the effectiveness of the use of alphabet cards game as interesting tool to explain vocabularies and it make it easier to remember their meanings. This study belongs to the quasi experimental research and presents pre-test, post test and to investigate the effect of using alphabet cards game on vocabulary mastery of commercial business administration students. The participants were the students from commercial business administration students at the third semester (N=54) of State Polytechnic Bengkalis and divided into two groups. Both groups were taught vocabulary, however, the experimental group students who are exposed to alphabet cards game and the controlled group students who received conventional method. Pre-test and post-test were given to both experimental group students and controlled group students. The score of the vocabulary tests were compared through independent sample t-test. The mean value of pre-test of experimental class was 61.35, while the control class was 52.23. After learning using alphabet card games in experimental class the mean value obtained in post-test was 78.85, while in control class was 59.04.  The improved of learning outcomes can be seen from the level of significance was 0.000 and it was lower than t test 0.000<0.05.  It means that the hypothesis null is not accepted. Therefore, it can be concluded that the score of the students in learning vocabulary between the experimental group and control group was significantly different. The experimental group students who learned vocabulary using alphabet cards game had increased their vocabulary mastery.


2015 ◽  
Vol 21 (4) ◽  
pp. 302-307 ◽  
Author(s):  
Noelia González-Gálvez ◽  
María Carrasco Poyatos ◽  
Pablo Jorge Marcos Pardo ◽  
Rodrigo Gomes de Souza Vale ◽  
Yuri Feito

INTRODUCTION: Low levels of hamstring flexibility may trigger certain acute and chronic pathologies and injuries. Poor flexibility is observed among teenagers and several authors have recommended the use of specific programs in this population to improve flexibility levels. The Pilates Method (PM) may be an appropriate intervention to achieve this purpose and has rarely been used with this population. Objective: Study was to assess changes in the flexibility of hamstrings after running a didactic PM unit for high-school students.METHODS: This research was developed through a quasi-experimental design. The sample consisted of 66 high-school students divided into experimental group (EG=39) and control group (CG=27). The intervention was carried out 2 times a week for six weeks. Each session lasted 55 minutes divided into three parts: warm-up, main part and cool down. Hamstring flexibility was assessed using the toe-touch test. Paired Student t-test and t-test for independent samples were applied. The size of the effect (d) was determined.RESULTS: The EG showed significant provident in hamstring flexibility (+3.54±3.9cm). The effect size was low (d>d>0,2<0,53), which means that a small proportion of participants improved their results. The control group did not have significant changes after the intervention. In the experimental group, both boys (+3.38± 3.7cm) and girls (+3.85 ± 4.2cm) showed significant improvements. The effect size was low for boys (d>d>0.2<0.53), which means that a small proportion of participants improved their results, and high for girls (d>1.15) which means that a large proportion of participants improved their results.CONCLUSION: This study showed that six-weeks of Pilates training in Physical Education classes has significantly improved the hamstrings flexibility among adolescents.


2019 ◽  
Vol 2 (2) ◽  
pp. 135-146
Author(s):  
Asfi Aniuranti ◽  
Putri Amalia Rizkina

This study was aimed at investigating the effectiveness of an English song entitled ‘Because You Loved Me’ to teach past simple. Past simple itself is oneof the necessary yet problematic tenses for learners. The research employed was quasi-experimental pretest-post-test design was employed in this research. Thepopulation of this study was five classes of the first grade students of senior highschool. Due to the high number of the population, this research only used twoclasses as the sampling - one class as the experimental group and the other oneas the control group. This research was carried out through four stages namelypretest, treatment implementation, post-test and data analysis. The result of thedata analysis showed that ‘Because You Loved Me’ song is effective for teachingpast simple. The value of t-test was higher than the t-table. The result of t-test formula was 1.91, and the t-table was 1.67. Overall, English song entitled ‘Because You Loved Me’ is effective to teach past simple and using songs in EFLclassrooms may also provide comfortable and interesting teaching and learningprocess.


Author(s):  
Efi Kurniati ◽  
Dyah Kusumastuti

The purpose of this research was to find out the effectiveness of concept map to organize ideas in writing exposition text. This research was conducted in one senior high school in Purwokerto in academic year 2018/2019. The population was all the eleventh grade students in that school. Researcher used two classes as control group and experimental group. This research used quasi experimental research which was done in November 2019. The instrument of collecting data was tested. The test was done twice which called pre-test and post-test. The type of the test was writing test. T-test formula was used to analyze the data. Based on the computation, t-test result was 3.535 and the t-table was 1.677 at significant level 0.05 with the degree of freedom 48. It showed that t-result was higher than t-table. Based on the research result, it can be concluded that concept map was effective to organize ideas in writing exposition text.


2018 ◽  
Vol 1 (2) ◽  
pp. 76-85
Author(s):  
Sudarmanto Sudarmanto

This research discussed how the use herringbone technique  to improve the students’ ability in reading. This research used quasi experimental design that applied a pre-test and post-test design. The data was analyzed by using t-test. The population of this research was the eight year students of SMP Negeri 9 Parepare in academic year 2013/2014. There were two classes, a class for experimental class and a class for control class. It utilized cluster random sampling technique. The number of each class was 30 students. The instrument used in this research was reading test use of herringbone technique in learning reading. The result of this research was a significant difference between experimental group and control group. This indicates the mean score of the post-test of experimental group was 97 while that of the control group was 92. Moreover, the t-test value (7,24) was higher than t-table value (2.021). In other words, Hypothesis Alternative (H1) was accepted and Hypothesis Null (H0) was rejected. This means that Using Herringbone technique can improve the students’ reading comprehension by using herringbone technique.


Author(s):  
Susanto Susanto ◽  
Meiliana Hidayati

The objective of this research was aimed to investigate the effect of peer review on students’ motivation and ability in writing recount text.  The method of the research was a quasi-experimental design with a control and experimental group and a post-test only. The population of this research was the entire eight grade students of SMPN 1 Tanggunggunung. The cluster random sampling was used in the sampling technique. There were two classes of eight grade students as the sample of this research. They were VIII D that consists of 32 students as the control class and VIII G that consists of 30 students as the experimental class. Tests and questionnaires were the instruments of this research. The data collected from the tests were analyzed by using independent sample t-test and MANOVA through SPSS.  Results show that the independent sample t-test was 0.001 for motivation and 0.000 for the writing ability. Moreover, the result of the MANOVA test was 0.000. The results were consulted to the score of the significant value generated Sig. (P-value) < α = 0.05. Thus, Ho was rejected and Ha was accepted. In other words, the result of the study revealed that peer review gave a significant effect on the students’ motivation and ability in writing recount text. It can be concluded that there is a significant effect on the students’ writing motivation and writing ability who taught using peer review.  


2018 ◽  
Vol 6 (01) ◽  
pp. 15-26
Author(s):  
Nita Lia Rosidi ◽  
Sumihatul UMMAH

This research applied experimental design with a quantitative approach. It was quasi-experimental research type. The instrument research used test (pre-test and post-test) and documentation. The population of this research was the whole class XI  students of  SMAN 3 Pamekasan and the sample of this research was XI-MIPA3 as control group and XI-MIPA4 as experimental group. The control group was 30 students and either the experimental group. So, the sample of this research was 60 students. the The data collected were analyzed by using t-test formula to find whether any effect of using physical line-up game on students’ grammar achievement at the eleventh grade of SMAN 3 Pamekasan. The result of this study showed that t-value ( ) is higher than t-table ( ) either 5% or 1% where (5% = 1,67 < 3,33) or (1% = 2,39 < 3,33). But in this case, the researcher used significant on 5% (5% = 1,67 < 3,33). Thus, it can be concluded that Ha (Alternative Hypothesis) was accepted and the Ho (Null Hypothesis) was rejected. So, the effect was far in achieving the student’s ability of grammar comprehension by using physical line-up game.   Abstrak: Penelitian ini menerapkan desain eksperimen dengan pendekatan kuantitatif. Jenis penelitian kuasi-eksperimental. Instrumen penelitian menggunakan tes (pre-test dan post-test) dan dokumentasi. Populasi dalam penelitian ini adalah seluruh siswa kelas XI SMAN 3 Pamekasan dan sampel penelitian ini adalah XI-MIPA3 sebagai kelompok kontrol dan XI-MIPA4 sebagai kelompok. Jumlah siswa pada Kelompok kontrol dan kelompok eksperimen adalah 33 siswa. Jadi, sampel penelitian ini adalah 66 siswa. Data yang terkumpul dianalisis dengan menggunakan rumus t-test untuk mengetahui apakah ada pengaruh penggunaan physical line-up game terhadap prestasi grammar siswa pada kelas XI SMAN 3 Pamekasan. Hasil penelitian ini menunjukkan bahwa t-nilai (t0) lebih tinggi dari t-tabel (tt) baik 5% atau 1% di mana (5% = 1,67 <3,33) atau (1 % = 2,39 <3,33). Tetapi dalam hal ini, peneliti menggunakan signifikan pada 5% (5% = 1,67 <3,33). Dengan demikian, dapat disimpulkan bahwa Ha (Hipotesis Alternatif) diterima dan Ho (Null Hypothesis) ditolak. Jadi, efeknya jauh dalam mencapai kemampuan pemahaman gramatika siswa dengan menggunakan physical line-up game.


2020 ◽  
Vol 3 (2) ◽  
pp. 86-96
Author(s):  
Indrawati Indrawati ◽  
Febya Resti

Abstract The research problems of this study were (1) to find out the application of anagram technique in improving student’s vocabulary mastery and (2) to know whether there was a significant difference in vocabulary mastery between the experimental group where the anagram technique was implemented and the control group which no treatment was given during the experiment.  In this study, the writer used the quantitative method with quasi experimental group design. The samples of this study consisted of 36 students of VII E as Experimental Group and 36 students of VII F as Control Group taken from the second year students of seven classes of MTs N Pangkalpinang. The result of the test was analyzed by using statistical analysis of Paired sample t-test and Independent sample t-test. Based on the result analysis, there were two major findings, namely (1) the implementation of Anagram technique in developing students’ vocabulary mastery was successful and the result of difference analysis in post-test of experimental and control group showed that the value of t-obtained was 3.488 which was higher than t-table 2.03 (at the significant level p<0.05 in two tailed testing with degree of freedom 70). The result of this study showed when the means of the post tests between the two classes were compared, the post-test scores were better than the pre-test scores (43.31)for the experimental group (80.89).     


Author(s):  
Ana Saisabila

This study aims to determine the influence and the effect size of student facilitator and explaining learning model, assisted by non-projection visual media toward the science knowledge competences of fourth grade students at SD Gugus Letda Made Putra North Denpasar 2017/2018 academic year. The type of this research is quasi experimental with non-equivalent control group design. The population of this research was 11 group classes of fourth grade students at SD Gugus Letda Made Putra North Denpasar which amount to 393 students. The sampling technique used in this research is the group sample technique. The sample of this study was consist of 2 groups; experimental group and control group. Each group was given a pre-test and then measured by using the t-test to determine its equality. The data of science knowledge competences were obtained through a test of multiple choice questions. After obtaining the post-test data of science knowledge competences, the data were analyzed by using t-test with polled variance formula. The average post-test score of the students in the experimental group is 75,37 and the average student in the control group is 68,25. Based on the 5% of significance level and the dk = 71, the result obtains the tcount = 2,147 > ttable = 1,994. Thus, there is a significant difference of science knowledge competences between the experimental group and the control group. It can be concluded that student facilitator and explaining learning model assisted by non-projection visual media has a significant influence toward science knowledge competences of fourth grade students at SD Gugus Letda Made Putra Nort Denpasar 2017/2018 academic year. The calculation of the effect size model to science knowledge competences is done by calculating the Cohen's d Coefficient, which obtains value d = 0,51 with medium effect category.


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