scholarly journals IMPACT OF THE MATHEMATICAL MODELING ON CONCEPTUAL UNDERSTANDING AMONG STUDENT-TEACHERS

2021 ◽  
Vol 56 (5) ◽  
pp. 538-551
Author(s):  
Soheil H. Salha ◽  
Naji Qatanani
Keyword(s):  
Mathematical Modeling ◽  
Student Teachers ◽  
Conceptual Understanding ◽  
Comparison Group ◽  
Mathematics Learning ◽  
Test Results ◽  
Modeling Instruction ◽  
Modeling Group ◽  
Comparison Groups ◽  
Engaging Student

The present study investigates the effect of mathematical modeling on conceptual understanding among student-teachers. Also, the study proposes relevant materials and activities in mathematical modeling. Two classes of 140 student-teachers participated in the study. Mathematical modeling instruction was used in the treatment group, while the comparison group was taught by a teacher-centered method. T-Test results showed a difference between the treatment and comparison groups in terms of conceptual understanding. Moreover, the mathematical modeling group showed improvement in the knowledge, comprehension, and application of geometry and measurement concepts. The results of this study are novel as they are introduced to student-teachers to facilitate teaching mathematics among children. The researchers suggested engaging student-teachers in rich modeling activities, which would deepen their students' mathematics learning.

scholarly journals PENINGKATAN PEMAHAMAN KONSEP SISWA DENGAN PENDEKATAN METAPHORICAL THINKING PADA PEMBELAJARAN DARING MATERI ARITMATIKA SOSIAL

2021 ◽  
Vol 9 (4) ◽  
pp. 386-396
Author(s):  
Nur Nabilah Syahrur Rohmah ◽  
Intan Dwi Cahyani ◽  
Oryza Lisativani Fatimah ◽  
Surya Sari Faradiba
Keyword(s):  
Conceptual Understanding ◽  
Mathematics Learning ◽  
Test Results ◽  
Research Subjects ◽  
Mathematical Concepts ◽  
Metaphorical Thinking ◽  
Student Activity ◽  
Activity Assessment ◽  
Approach Method ◽  
Student Test

This research is motivated by the low understanding of students' mathematical concepts, especially on social arithmetic material. The purpose of this study was to describe the stages of the metaphorical thinking approach method and the magnitude of the increase in students' conceptual understanding of social arithmetic material. The data collection method used in this classroom action research (CAR) includes written tests and observations in each cycle. The research instruments used were lesson plans, worksheets, question sheets, and observation sheets for the implementation of learning in each cycle. The research subjects were students of class VII in one of the madrasah tsanawiyah in Lamongan as many as 23 students. Based on the results of data analysis, the classical student activity assessment increased 23.85% from 66.25% to 90.1%. Student test results also increased by 34.8%, namely from cycle I it reached 47.8% and cycle II reached 82.6%, with the results achieved can be declared complete, and it can be concluded that in online mathematics learning there is an increase in understanding concept in class VII madrasah tsanawiyah in Lamongan by using the application of Metaphorical Thinking.

scholarly journals Risk stratification of postoperative complications in jaundiced patients with focal diseases of the biliopancreatoduodenal zone

2021 ◽  
Vol 11 (6) ◽  
pp. 309-319
Author(s):  
P. Muraviov ◽  
B. Zaporozhchenko ◽  
I. Borodaev ◽  
V. Shevchenko ◽  
M. Zaporozhchenko ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Risk Stratification ◽  
Genetic Factors ◽  
Comparison Group ◽  
Radical Surgery ◽  
Malignant Tumors ◽  
Main Group ◽  
Decompression Surgery ◽  
Preoperative Preparation ◽  
Comparison Groups

The risk stratification was performed by mathematical modeling taking into account genetic factors and the results of instrumental research as ultrasonic elastography. The results of 272 jaundiced patients’ surgical treatment as pancreaticoduodenal resection (PDR) for malignant tumors of biliopancreatoduodenal area (218 patients) and chronic pseudotumoral pancreatitis (54 patients) were analyzed. In the main group (n=112) the optimized algorithm of preoperative preparation and risk stratification was used and in the comparison group (n=160) preparation for PDR was carried out conservatively according to generally accepted standards. radical surgery is defined as inexpedient and too risky, while shunt decompression surgery is performed as a first step for pancreatoduodenal resection. Thanks to the preoperative preparation according to our algorithm, mental status evaluation in the main group compared to the comparison one was significantly better. By MoCA scale before surgery it was 24.9 ± 3.2 and 22.8 ± 2.4 points, and by the DSST test - 40.2 ± 3.8 and 23.6 ± 2.6 points in the main and comparison groups respectively. The level of bilirubinemia in patients of the main group on the day before PDR was 112.3±2.7 μmol/l, while in the comparison one it was 198.3±3.3 μmol/l (p <0.05). On the eve of the PDR, the activity of alkaline phosphatase was in the main group 104.8 ± 1.3 U / l, and in the comparison group - 270.8 ± 1.9 U / l (p <0.05). Before PDR, γ-glutamiltransferase activity significantly decreased to 529 ± 29 U / l in the comparison group and to 485 ± 33 U / l in the main group (p <0.05).

Self-compassion and empathy in caregiver and comparison groups: Differences in negative components

2019 ◽  
Author(s):  
Monica Beals ◽  
Melissa Birkett
Keyword(s):  
Comparison Group ◽  
Well Being ◽  
Positive Outcomes ◽  
Personal Distress ◽  
Self And Other ◽  
Self Compassion ◽  
Descriptive Information ◽  
Supportive Behavior ◽  
Comparison Groups ◽  
Health And Well Being

Self-compassion and empathy are positively associated with mental health, physical health, and well-being. Caregivers higher in self-compassion and empathy show increased caring and supportive behavior. Cultivating self-compassion and empathy have been suggested to enhance positive outcomes, however descriptive information about these constructs is lacking for caregiver and comparison groups. The current study examined self-compassion and empathy among caregivers (self-identified parents of at least one child under 18 years of age; n=335) and a comparison group (n=215). Caregivers had higher scores of total self-compassion and empathy, with lower scores of self-judgement, isolation, and overidentification (self-compassion subscales), and personal distress (empathy subscale). Describing self-compassion and empathy in caregiver and comparison groups has implications for key health outcomes and highlights differences in self- and other-directed constructs in a diverse sample of adults.

scholarly journals Gametocyte carriage after seasonal malaria chemoprevention in Plasmodium falciparum infected asymptomatic children

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Abdullahi Ahmad ◽  
Aurelia Prom ◽  
John Bradley ◽  
Mamadou Ndiath ◽  
Blessed Etoketim ◽  
...  
Keyword(s):  
Plasmodium Falciparum ◽  
Comparison Group ◽  
Conditional Logistic Regression ◽  
Gametocyte Carriage ◽  
Asymptomatic Children ◽  
Seasonal Malaria Chemoprevention ◽  
Before And After ◽  
Chi Squared ◽  
Comparison Groups ◽  
To Receive

Abstract Background Treatment of clinical Plasmodium falciparum malaria with sulfadoxine-pyrimethamine (SP) and amodiaquine (AQ) is associated with increased post-treatment gametocyte carriage. The effect of seasonal malaria chemoprevention (SMC) with SP and AQ on gametocyte carriage was assessed in asymptomatic P. falciparum infected children. Methods The study was carried out in eastern Gambia. Asymptomatic P. falciparum malaria infected children aged 24–59 months old who were eligible to receive SMC (SMC group) and children 5–8 years that were not eligible to receive SMC (comparison group) were recruited. Gametocytaemia was determined by molecular methods before and after SMC administration. Gametocyte carriage between the groups was compared using the chi-squared test and within-person using conditional logistic regression. Results During the 2017 and 2018 malaria transmission seasons, 65 and 75 children were recruited in the SMC and comparison groups, respectively. Before SMC administration, gametocyte prevalence was 10.7% (7/65) in the SMC group and 13.3% (10/75) in the comparison group (p = 0.64). At day 13 (IQR 12, 13) after SMC administration, this was 9.4% (5/53) in children who received at least the first dose of SMC treatment and 12.7% (9/71) for those in the comparison group (p = 0.57). Similarly, there was no difference in prevalence of gametocytes between children that adhered to all 3-day doses of SMC treatment 15.6% (5/32) and those in the comparison group (p = 0.68). In the SMC group, within-group gametocyte carriage was similar before and after SMC administration in children that received at least the first dose of SMC treatment (OR 0.6, 95% CI 0.14–2.51; p = 0.48) and in those that adhered to all 3-day doses of SMC treatment (OR 1.0, 95% CI 0.20–4.95; p = 1.0). Conclusion In this study with relative low gametocyte prevalence prior to SMC treatment, no evidence was observed that SMC treatment increased gametocyte carriage in asymptomatic P. falciparum malaria infected children.

Improving The Student's Classroom Student's Reasoning Ability In Mathematics Lesson Through Problem Solving Efforts At Sdn 13 Kubang

2018 ◽  
Vol 1 (2) ◽  
pp. 149-158
Author(s):  
Zulfetriani Zulfetriani
Keyword(s):  
Learning Outcomes ◽  
Teaching And Learning ◽  
Basic Education ◽  
Mathematics Learning ◽  
Basic Knowledge ◽  
Test Results ◽  
Community Members ◽  
Maximum Value ◽  
Study Results ◽  
Daily Test

Basic education aims to provide basic skills to learners to develop their lives as individuals, community members, citizens and members of the human race and prepare learners to follow the next education. Primary education is organized to develop skills attitudes and provide the basic knowledge and skills necessary to live in communities and prepare learners who are eligible for secondary education (UU Sisdiknas No. 20 Year 2003 article 13). In teaching and learning activities, a teacher would have hope of desire for learners can get the maximum value possible, in accordance with the learning objectives created or desired but what can be in word, reality. For special mathematics subjects, field findings such as EBTANAS, summative test results and daily test scores and report scores indicate that the learners' learning outcomes are still below the numbers that may be unsatisfactory in both low and class high. From some study results and opinions of experts, the low mathematics learning outcomes of students is not because they are not able to perform calculations, but because they do not understand the problems contained in the problem. Hudoyo (in Laily Hasbullah: 2000: 1) states that questions related to numbers are not so difficult for learners, but the problems that use sentences are very difficult for learners who have less or less ability.  

Quasi-Experimental study of effects of lighting on rest, activity and melatonin in postpartum women

2021 ◽  
Vol 74 (6) ◽  
Author(s):  
Cristina Furtado Volcov ◽  
Eliana Moreira Pinheiro ◽  
Miriam Harumi Tsunemi ◽  
Fernanda Gaspar do Amaral ◽  
Ariane Ferreira Machado Avelar ◽  
...  
Keyword(s):  
Experimental Study ◽  
Comparison Group ◽  
Total Load ◽  
Long Wavelength ◽  
Light Regimen ◽  
Early Postpartum ◽  
Comparison Groups ◽  
Quasi Experimental ◽  
The Mean ◽  
Experimental Group

ABSTRACT Objectives: to compare the parameters of the activity/rest cycle of early postpartum breastfeeding women under a controlled and uncontrolled long wavelength ray light regimen. Methods: quasi-experimental study with breastfeeding women and their babies during postnatal rooming-in, São Paulo, Brazil. Participants were allocated to either an experimental (intervention) or a comparison group. The intervention involved exposure of the woman in a controlled room with artificial long wavelength ray light at night. Each woman’s level of 6-sulfatoxymelatonin at 24 hours and activity/rest times was analyzed. Results: the mean activity/rest times of women in the experimental and comparison groups were similar. The mean percentages of total load of 6-sulfatoxymelatonin during the day and night were similar (p=0.09). At 24 hours, the experimental group presented a significantly lower mean percentage of total load compared to the comparison group (p=0.04). Conclusions: women who stayed in the room with long-wavelength artificial light showed no difference in activity/rest and 6-sulfatoxymelatonin levels in the early postpartum period.

Institutionalization of athletic conferences for wage comparison in collective bargaining in High Schools in the US: A natural experiment

2018 ◽  
Vol 24 (6) ◽  
pp. 808-828
Author(s):  
Heejoon Park
Keyword(s):  
High Schools ◽  
Collective Bargaining ◽  
Institutional Theory ◽  
Social Comparison ◽  
Natural Experiment ◽  
Comparison Group ◽  
The Us ◽  
Wage Comparison ◽  
Comparison Groups ◽  
Technical Factors

AbstractSocial comparison plays an important role in collective bargaining. However, due to self-serving bias, the bargaining parties rarely agree on appropriate referents. In this respect, Wisconsin teachers’ collective bargaining provides an intriguing case because there is consensus on an appropriate comparison group: the schools’ athletic conferences. The purpose of this study is to examine whether the use of athletic conferences as referents is institutionalized beyond their technical merits. Using conference realignment as a natural experiment, this paper shows that when the bargaining parties experienced conference realignment, they changed their comparison groups. Because this realignment can be regarded as exogenous to collective bargaining, such changes in comparison groups are unlikely to be accounted for by technical factors, thus providing support for institutional theory.

scholarly journals Improving Mathematics Learning Outcomes Through Cooperative Learning Model Type NHT In Grade VIII A Students MTS Muhammadiyah

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Muhamad Ruslan Layn
Keyword(s):  
Cooperative Learning ◽  
Learning Outcomes ◽  
Mathematics Learning ◽  
Learning Model ◽  
Male Students ◽  
Average Score ◽  
Test Results ◽  
Average Value ◽  
Class Viii ◽  
Pythagoras Theorem

This research is a Classroom Action Research (PTK), which aims to improve the learning outcomes of mathematics through NHT type cooperative learning model in students of class VIII A MTs. Muhammadiyah conducted collaboratively between researchers and teachers of mathematics studies. In the implementation of this research, it is done by giving group worksheet and observation sheet of student activity using NHT type cooperative learning model after giving an explanation about Pythagoras Theorem material as much as two cycles that cycle I and II. After being given group worksheets then conducted the assessment includes assessment of test results of a cycle I and cycles II and group worksheet to students that is by applying learning model of cooperative learning type NHT. The subjects of this study were students of class VIII A which amounted to 20 students consisting of 15 male students and 5 female students. Techniques of collecting data in research are this observation and test. The data obtained were then analyzed. The results of the study showed that the implementation using NHT type cooperative learning model on Pythagoras Theorem material. the ability of students in solving problems on the material above has increased. With the increase of the average value of students in the first cycle was 43.45 and increased in cycle II 83.90. Improvement of student learning outcomes to mathematics learning using NHT type cooperative learning is good. This is indicated by the average value of group learning outcomes in cycle I 60.00 or being in the medium category and the average score of the learning outcomes of the group in cycle I 82.50 or in the high category. This shows the result of increased mathematics learning after conducting cooperative learning model of NHT type

scholarly journals Starvation in childhood and obesity in senior age

2017 ◽  
Vol 8 (6) ◽  
pp. 56-61
Author(s):  
Lidya P. Khoroshinina ◽  
Alexander V. Shabrov ◽  
Leonid G. Buynov
Keyword(s):  
Comparison Group ◽  
Age Groups ◽  
Older Age ◽  
Obesity Prevalence ◽  
Obese People ◽  
The World ◽  
Comparison Groups ◽  
Subcutaneous Layer ◽  
The Common ◽  
Severe Degree

The problem of children's starvation remains relevant and actual at the present time, as in the 21st century experts from the leading countries of the world coordinate their efforts to create programs aimed at eliminating extreme poverty and hunger of. At the same time, the analysis of obesity prevalence typical for the population of some countries of the world, indicates an increase in the number of obese people in both economically developed and developing countries. In this article we are talking about the common severe degree of abdominal obesity in people of older age groups, survivors in childhood, long periods of fasting. Studied 594 history and Protocol of autopsy of people in older age groups, born from 1927 to 1941 and the dead on the hospital for war veterans in St. Petersburg from 1989 to 2000. The whole array of documents was structured by sex, age, the fact of living in the blockaded Leningrad. Severe degree of obesity was considered to be exceeded more than 7 cm of thickness of deep abdominal subcutaneous layer of adipose tissue. It is well established that former young residents of the besieged Leningrad, regardless of gender, age, die sooner than men and women in the comparison groups; men who survived long periods of starvation in children, were dying earlier than men in the comparison group and earlier than women of the main group; women who have experienced a long period of starvation before the age of 11 years, often dying because of cardiovascular diseases than women in the corresponding subgroup comparisons; the emergence of pronounced obesity in older age-governmental groups from the former young residents of the blockaded Leningrad, determined by elk not only the fact of prolonged fasting, but child sex and age, which accounted for starvation.

scholarly journals Developing The Mathematics Conceptual Understanding and Procedural Fluency through Didactical Anticipatory Approach Equipped with Teaching AIDS

2018 ◽  
Vol 3 (2) ◽  
pp. 367
Author(s):  
Asmida Asmida ◽  
Sugiatno Sugiatno ◽  
Agung Hartoyo
Keyword(s):  
Conceptual Understanding ◽  
Junior High School ◽  
Mathematics Learning ◽  
Posttest Score ◽  
Mathematics Textbook ◽  
Teaching Aids ◽  
Procedural Fluency ◽  
Mathematical Problems ◽  
Epistemological Obstacles ◽  
And Mathematics

The students’ conceptual understanding and procedural fluency have not been yet integrated into the mathematics learning as the teachers’ common mathematics textbook has not explicitly explained the conceptual understanding and procedural fluency in solving the mathematical problems that the teachers have not yet connected it to the mathematics learning. The interview result shows that the students only memorize the procedures without understanding. If the procedure is continuously applied, it is predicted that the students may face the epistemological obstacles in solving the mathematical problems. This research aims at developing the students' mathematics conceptual understanding and procedural fluency through the Didactic Anticipatory Approach equipped with the teaching aids in learning the operations of integer multiplication at Junior High School in Grade VIII. This pedagogical action research involves 14 students. The research data are collected using tests, interviews, voice recorders and cameras. The result shows that learning mathematics through the Didactic Anticipatory Approach equipped with teaching aids may develop the students' conceptual understanding and mathematics procedural fluency marked by the reduced students’ epistemological obstacles. However, they are not yet been completely resolved. The students' conceptual understanding and mathematics procedural fluency also supported with the average posttest score higher than that of the pretest score.

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