scholarly journals Does the use of technology make a difference in the geometric cognitive growth of pre-service mathematics teachers?

2012 ◽  
Vol 28 (7) ◽  
Author(s):  
Gerrit Stols
Keyword(s):  
Student Teachers ◽  
Mathematics Teachers ◽  
Dynamic Geometry ◽  
Dynamic Geometry Software ◽  
Cognitive Growth ◽  
Van Hiele ◽  
Use Of Technology ◽  
Before And After ◽  
Quasi Experimental ◽  
The Difference

<blockquote>This study investigated the geometric cognitive growth of pre-service mathematics teachers in terms of the Van Hiele levels in a technology-enriched environment, as opposed to that of students in a learning environment without any technological enhancements. In order to investigate this, a quasi-experimental non-equivalent comparison group design was used. Similar course content was used for both the control and experimental groups. The students worked through a series of geometry activities and problems. The difference between the groups was that dynamic geometry software was integrated into the teaching of the experimental group. The <em>Cognitive Development and Achievement in Secondary School Geometry</em> (CDASSG) Van Hiele geometry test was used to determine all the students' level of geometric thinking before and after the course. The study found that the use of dynamic geometry software enhanced student teachers' geometric visualisation, analysis and deduction, but not their ability to informally justify their reasoning and to understand the formal aspects of deduction.</blockquote>

scholarly journals Effect of pterygium excision on mean corneal curvature.

2021 ◽  
Vol 28 (04) ◽  
pp. 568-571
Author(s):  
Saira Bano ◽  
Sumaya Khan ◽  
Mahnoor Waqar ◽  
Moniba Iqbal ◽  
Hamza Waqar Bhatti ◽  
...  
Keyword(s):  
P Value ◽  
Corneal Curvature ◽  
Ocular Surgery ◽  
Department Of Ophthalmology ◽  
Before And After ◽  
Quasi Experimental ◽  
History Of ◽  
Induced Astigmatism ◽  
Pterygium Excision ◽  
The Difference

Objective: To determine the difference in mean corneal curvatures before and after pterygium excision. Study Design: Quasi-experimental study. Setting: Department of Ophthalmology, Holy Family Hospital, Rawalpindi. Period: 1st January 2015 to 1st July 2015. Material & Methods: 68 patients aged between 18 to 65 years were included in the study. Patients with history of ocular trauma, ocular surgery, glaucoma, anti-glaucoma treatment, allergy to steroids, pseudo pterygium, recurrent pterygium and presence of corneal abnormalities such as, scarring that might affect the astigmatic value were excluded. All patients underwent comprehensive ophthalmic examination by slit lamp and best corrected visual acuity and keratometric values were noted. Pterygium excision was done by a single surgeon. BCVA and keratometric readings were taken again after 2 weeks of pterygium excision. Results: Mean age was 37.60 ± 11.11 years. Out of these 68 patients, 44 (64.71%) were male and 24 (35.29%) were females. Mean pre-operative corneal curvature was 2.99 ± 0.69D and post-operative corneal curvature was 1.70 ± 0.40D with P-value of <0.0001 which is statistically significant. Conclusion: This study concluded that pterygium excision brings significant change in corneal curvature in patients of pterygium induced astigmatism.

scholarly journals The difference in saliva pH before and after brushing with fluoride containing toothpaste and without toothpaste

2008 ◽  
Vol 20 (3) ◽  
Author(s):  
Samuel Setiawan ◽  
Edeh Rolleta Haroen ◽  
Dede Hadidjah
Keyword(s):  
Drinking Water ◽  
Research Method ◽  
Control Group ◽  
Research Subjects ◽  
Male And Female ◽  
Significant Difference ◽  
Salivary Ph ◽  
Before And After ◽  
Quasi Experimental ◽  
The Difference

In administering fluoride through drinking water there is the risk of overdose, higher cost and inadequate availability of drinking water containing fluoride in developing countries like Indonesia. A safe fluoride source is contained in toothpaste. The purpose of this research was to obtain data concerning difference in saliva pH before and after brushing with toothpaste containing fluoride and without toothpaste. The research method used was the quasi-experimental method. Samples were collected by the way of purposive sampling, conducted on 43 male and female research subjects. The data were analyzed by statistical analysis using the t test at 95% confidence level. In this research a control group consisting of 43 people was used. Research results indicated that the average saliva pH before brushing was 7.174; after brushing with fluoride containing toothpaste salivary pH was 7.593. Result research of brushing without toothpaste showed an average saliva of 7.163 before brushing and 7.379 after brushing without toothpaste. The average changes in saliva pH before and after brushing using fluoride containing toothpaste was 0.216. The conclusion of this research was that there was significant difference in saliva pH before and after brushing with toothpaste containing fluoride; there was significant difference in saliva pH before and after brushing without toothpaste, and there was significant difference in saliva pH before and after brushing with toothpaste containing fluoride and without toothpaste.

scholarly journals Preparing In-Service Teacher Using Dynamic Geometry Software

2018 ◽  
Vol 7 (4.30) ◽  
pp. 367
Author(s):  
Fariz Setyawan ◽  
Yosep Dwi Kristanto ◽  
Naufal Ishartono
Keyword(s):  
Professional Development ◽  
Learning Process ◽  
Teaching And Learning ◽  
Dynamic Geometry ◽  
Development Program ◽  
Dynamic Geometry Software ◽  
Professional Development Program ◽  
Skills Transfer ◽  
Teachers Perceptions ◽  
Use Of Technology

The use of technology is essential in teaching and learning process. Many researchers have already been implemented Dynamic Geometry Software (DGS) in teaching and learning process. Given the importance of DGS, it is necessary for in-service teachers to use the software in their teaching and learning. Hence, it is important to prepare in-service teacher in utilizing DGS through the professional development program. This is a qualitative research which describes a professional development program to facilitate in-service teachers in utilizing DGS. Both questionnaire and review measured in-service teachers’ perceptions, knowledge and skills transfer, and impact for their practice. From the findings, four of five in-service teachers recognized that they can interact with geometric figures to move on to the next level by using DGS. The teachers felt that DGS has helped them to understand the mathematics concept and demonstrate their understanding in front of the class. Besides, DGS does not only offer opportunities for teachers and students to use them both at home and in the classroom, but they also provide a means for developing support and user communities reaching across borders especially in understanding of geometrical transformation. It has contributed that the teachers easily recognize the geometrical shapes interpretations dynamically on DGS.

scholarly journals Efektivitas Akupresur dan Minuman Jahe terhadap Pengurangan Intensitas Nyeri Haid/Dismenore Pada Remaja Putri

2021 ◽  
Vol 21 (1) ◽  
pp. 215
Author(s):  
Indah Dewi Sari ◽  
Utary Dwi Listiarini
Keyword(s):  
Young Women ◽  
Learning Activities ◽  
Wilcoxon Test ◽  
P Value ◽  
Menstrual Pain ◽  
Normality Test ◽  
Before And After ◽  
Post Test ◽  
Quasi Experimental ◽  
The Difference

Half of the women in Indonesia experience menstrual pain / dysmenorrhoea, 54.89%, experience various disorders including abdominal pain, cramps and back pain. The purpose of this study was to determine the effectiveness of acupressure, ginger drink and the difference in giving acupressure and ginger drink to reducing the intensity of menstrual pain / dysmenorrhea in young women at SMK Swasta PAB 5 Klambir Lima 2020. The design of this study used a quasi-experimental pre and post test with a sample of 30 students who were divided into two groups. Each group was given acupressure and ginger drink in the morning and evening during menstruation from day one to day two. Respondents were assessed for pain before and after the intervention was given. The results of the Shapiro-Wilk normality test contained Sig data (p <0.05). The Wilcoxon test has a p-value of 0.002 (p <0.05), which means that acupressure is effective in reducing the intensity of menstrual pain / dysmenorrhea, there is a p-value of 0.001 (p <0.05) which means that ginger is effective against reducing pain intensity. menstruation / dysmenorrhea, there is a p-value of 0.034 (p <0.05), which means that there is a difference in the effectiveness of acupressure and ginger drink in reducing the intensity of menstrual pain / dysmenorrhea. There is an effectiveness of giving acupressure, ginger drink, and there is a difference in giving acupressure and ginger drink on the intensity of menstrual pain / dysmenorrhea on young women. It is hoped that the school will provide ginger drinks and acupressure measures to young women who experience menstrual pain / dysmenorrhea so that they can participate in learning activities at school.

scholarly journals PENGARUH MODEL PEMBELAJARAN VAK (VISUALISASI, AUDITORI, KINESTETIK) TERHADAP PRESTASI BELAJAR PAI PADA SISWA DI SDN TLOGOMULYO TEMANGGUNG

2017 ◽  
Vol 11 (1) ◽  
pp. 53-64
Author(s):  
Kartika Hartanti
Keyword(s):  
Learning Model ◽  
Islamic Education ◽  
Class V ◽  
Learning Achievement ◽  
Significance Level ◽  
Average Value ◽  
Before And After ◽  
Post Test ◽  
Quasi Experimental ◽  
The Difference

This study aims to determine the effect of the application of VAK learning model on the learning achievement of PAI in class V Tlogomulyo Waterford Elementary School. This study was a quasi-experimental study (quasi-experimental). Subjects in this study consisted of 26 students of class V. The data was collected using VAK learning guidelines, test learning Islamic education, observation, documentation, and interviews. The validity of the instrument showing of 10 items proved to be valid all, are the results of the analysis show the reliability coefficient of 0.710 and otherwise reliable. Analysis of the data used in the form of comparative analysis using t-test. The results showed that there are significant implementation VAK learning model significantly to the learning outcomes of Islamic education. It can be seen from the difference in learning achievement Islam shortly before and after the given method VAK, the t value of 0.828 and significance level (p) of 0.05. In addition, an increase in the average acquisition value before application of VAK learning model (pre-test = 71.9) and after application of VAK learning model (post-test = 87.3). This shows an increase in the average value of 15.4. By looking at the difference in the score of the pre test and post test, shows that the VAK learning model is a model of effective learning for learning PAI.

scholarly journals PENGARUH TERAPI MUROTTAL TERHADAP TINGKAT KONSENTRASI SISWA KELAS VIII. G DI MTSN 2 MUARA ENIM TAHUN 2018

2019 ◽  
Vol 9 (01) ◽  
pp. 44-48
Author(s):  
Shinta Maharani ◽  
Devy Dwi Putri
Keyword(s):  
Standard Deviation ◽  
Experimental Design ◽  
Average Concentration ◽  
A Value ◽  
Significant Difference ◽  
Before And After ◽  
Quasi Experimental ◽  
The Difference ◽  
The One ◽  
Mean Concentration

One of the tasks of the development of children aged 11-15 years is to think in a more abstract and logical way and more idealistic thinking. This ability to think will be disrupted if teenagers have difficulty concentrating during learning. Therefore we need a method that is fun and can make children relax in learning so that they can concentrate their concentration on ongoing learning. One method that can be used is the Murrotal Al-Qur'an therapy. The aim of the study was to determine whether there was any effect of murottal therapy on the concentration of students at Muara Enim 2 MTsN. This study used a quasi-experimental design with the design of the one group pretest posttest. The sample used was all students of class VIII.G at MTsN 2 Muara Enim. The results showed that the average concentration score of class VIII.G students before Murottal therapy was given was 10.84 with a standard deviation of 3.043. While the average concentration score of class VIII.G students after being given murottal therapy was 17.90 with a standard deviation of 1.233, so that the difference in mean concentration scores before and after murottal therapy was 7.06 with a standard deviation of 1.81. Wilcoxon signed ranks test obtained ρ value = 0,000, with a value of α = 0.05 (p <0.05), this shows that there is a significant difference between the concentration of students before and after being given murottal therapy. It is expected that the school can make a policy about the application of murottal therapy in increasing student concentration.

scholarly journals The difference of the salivary volume before and after drinking the rosella tea (Hibiscus sabdariffa)

2010 ◽  
Vol 22 (3) ◽  
Author(s):  
Mutiara Indah Permata Sari Islami ◽  
Edeh Roletta Haroen ◽  
Sri Tjahajawati
Keyword(s):  
In Vitro Study ◽  
T Test ◽  
Hibiscus Sabdariffa ◽  
Test Analysis ◽  
Community Benefits ◽  
Significant Difference ◽  
Before And After ◽  
Quasi Experimental ◽  
The Difference

Introduction: Roselle plants (Hibiscus sabdariffa) is one of the herbs that began to be used by the community. Benefits of this plant is quite a lot for health. The portion taken for consumption is the red flower petals. oselle tea is one of the sour beverages which can affect the salivary gland secretion. The purpose of this study is to analyzed the difference of salivary volume before and after drinking roselle tea. Methods: This study has been conducted to 40 students of Faculty of Dentistry, Padjadjaran University, ranging from 18-23 years of age with good general condition. This study is quasi-experimental in vitro study using the paired test analysis with α = 0,05 of the data collected from salivary volume. Results: The result of study indicates that the average of salivary volume before drinking roselle tea is 1,90 milliliter. After drinking roselle tea, the average of salivary volume is 4,54 milliliter. The result of paired test analysis shows that t-test is 16,172 and t-table is 2,022. The value of t-test > t-table. Result of statistic shown there is significant difference of salivary volume before and after drinking roselle tea. Conclusion: There is a difference of salivary volume before and after drinking roselle tea.

scholarly journals DOBLADO DE PAPEL Y SOFTWARE DE GEOMETRÍA DINÁMICA. UNA EXPERIENCIA CON FUTUROS PROFESORES DE MATEMÁTICA

PARADIGMA ◽  
2020 ◽  
pp. 1017-1045
Author(s):  
Martha Iglesias ◽  
José Ortíz
Keyword(s):  
Secondary School ◽  
Mathematics Teachers ◽  
Dynamic Geometry ◽  
Dynamic Geometry Software ◽  
Argumentation Schemes ◽  
Initial Training ◽  
Geometric Problem ◽  
Paper Folding ◽  
Working Groups ◽  
Training Activities

El presente trabajo surge de un curso optativo de Resolución de Problemas Geométricos Asistido por Computadora (RPG-AC) que forma parte de la formación inicial de profesores de matemática en una universidad venezolana. Se estudian las actividades realizadas por 13 futuros profesores de matemática, en cinco grupos de trabajo, durante la implementación de un taller, el cual estuvo dirigido a la exploración de ángulos y triángulos con doblado de papel. Se utilizó el software de geometría dinámica CabriGéomètre II para mostrar la construcción con regla y compás de la herramienta triangular, y dejar ver su equivalencia con la construcción a partir del doblado de papel. En la validación de las construcciones realizadas en CabriGéomètre y en doblado de papel, se observaron esquemas de argumentación fácticos, empíricos y analíticos. Finalmente, el estudio realizado puso en evidencia que las actividades y experiencias formativas llevadas a cabo contribuyen a la formación didáctica y matemática de los futuros profesores.Palabras clave: Formación inicial de profesores de matemática, educación secundaria, software de geometría dinámica, doblado de papel, esquemas de argumentación.Ambientes de geometria dinâmica e dobragem de papel. Uma experiência com futuros professores de matemática.Resumo O presente trabalho nasce de um curso otátivo de Resoluçăo de Problemas Geométricos Assistido por Computador (RPG-AC) ó qual forma uma parte da formaçăo inicial de Professores de Matemática de uma Universidade venezuelana. Estudan-se as tarefas feitas por 13 (treze) futuros Professores de Matemática, em 5 (cinco) grupos de trabalho, durante a implementaçăo de um Talher, ó qual foi dirigido a exploraçăo de ângulos e triângulos com o dobrado de papel. Utilizou-se o software de Geometría dinámica: Cabri Géomètre II para ensinar a construçăo com régua e compás como ferramenta triângular, e deixar olhar a sua equivalènça com a construçăo desde o dobrado do papel. Na validaçăo das construçoĕs feitas em Cabri y no dobrado do papel, olharon-se quadros de argumentaçăo fácticos, impíricos e analíticos. Por fim, o estudo realizado mostrou que as atividades e experiências de treinamento realizadas contribuem para a formação didática e matemática de futuros professores. Palavras chave: formaçăo inicial de Professores de Matemática, Educaçăo secundária, software de Geometría dinámica, dobrado de papel, quadro de argumentaçăo.Paper folding and dynamic geometry software. An experience with pre-service mathematics teachersAbstractThis work arises from an optional course of Computer Aided Geometric Problem Solving (RPG-AC) that is part of the initial training of mathematics teachers in a Venezuelan university. The activities carried out by 13 future teachers of mathematics, in five working groups, are studied during the implementation of workshop, which was aimed at the exploration of angles and triangles with paper folding. The CabriGéomètre II dynamic geometry software was used to show the construction with the ruler and compass of the triangular tool, and to show its equivalence with the construction from the folded paper. In the validation of the constructions carried out in CabriGéomètre and in paper folding, factual, empirical and analytical argumentation schemes were observed. Finally, this study showed that the training activities and experiences carried out contribute to the didactic and mathematical training to pre-service teachers.Keywords: Pre-service mathematics teachers, secondary school, dynamical geometry software, folded paper, argumentation schemes.

scholarly journals KAKSA Orang Tua Siswa TK : Komunitas Anti Kekerasan Seksual pada Anak

2019 ◽  
Vol 5 (1) ◽  
pp. 83
Author(s):  
Ira Paramastri
Keyword(s):  
Experimental Study ◽  
Quantitative Analysis ◽  
Primary Prevention ◽  
General Education ◽  
Child Protection ◽  
Knowledge Test ◽  
Before And After ◽  
Quasi Experimental ◽  
The Difference ◽  
The One

Currently, primary prevention efforts for child sexual abuse (CSA) are mostly done as general education program for children at school. The program is criticized for placing responsibility of child protection solely on the children and rarely involves family, community, and children’s surrounding neighborhood. This study aimed to examine CSA psychoeducational prevention toward kindergarteners parents’ knowledge after an intervention in form of psychoeducational leaflets and booklets. The study was quasi-experimental study with the one group pretest-posttest design. Twenty six parents of kindergarteners participated in the study. Istruments used for the study was CSA knowledge test. Quantitative analysis was used to describe the difference of kindergarteners parents’ knowledge before and after the program (p=0.006, p<0.05). Psychoeducation with booklet and leaflet was able to improve kindergarteners parents’ knowledge on CSA prevention.

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