scholarly journals Analysis of Students Understanding of Chemical Bonds Concept Using Three Tier Multiple Choice

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Mellyzar Mellyzar
Keyword(s):  
Conceptual Understanding ◽  
Chemistry Education ◽  
Multiple Choice ◽  
Chemical Bonds ◽  
Research Subjects ◽  
Education Students ◽  
Bonding Material ◽  
Appropriate Treatment ◽  
Level Of Understanding

Diagnostic tests are needed to determine student weaknesses and can be used as a basis for follow-up with appropriate treatment. One type of diagnostic test is a three tier multiple choice. This study aims to analyze the level of students' understanding of chemical bonding material. The method used is descriptive with the research subjects of chemistry education students totaling 93 people. Data collection with 14 test questions three tier multiple choice and analysis of students' level of understanding using the technique Certainty of Responses Index (CRI). The results showed very low understanding of the chemical bond concept namely 29.50% and 62.77% misconception high category. The use of three tier multiple choice with the CRI technique is able to classify students' conceptual understanding.

Inconsistencies in Students' Reasoning About Probability

1993 ◽  
Vol 24 (5) ◽  
pp. 392-414
Author(s):  
Clifford Konold ◽  
Alexander Pollatsek ◽  
Arnold Well ◽  
Jill Lohmeier ◽  
Abigail Lipson
Keyword(s):  
Secondary School ◽  
Random Process ◽  
Conceptual Understanding ◽  
Secondary School Students ◽  
Multiple Choice ◽  
School Students ◽  
College Age ◽  
Prediction Scheme ◽  
Multiple Choice Items

Subjects were asked to select from among four possible sequences the “most likely” to result from flipping a coin five times. Contrary to the results of Kahneman and Tversky (1972), the majority of subjects (72%) correctly answered that the sequences are equally likely to occur. This result suggests, as does performance on similar NAEP items, that most secondary school and college-age students view successive outcomes of a random process as independent. However, in a follow-up question, subjects were also asked to select the “least likely” result. Only half the subjects who had answered correctly responded again that the sequences were equally likely; the others selected one of the sequences as least likely. This result was replicated in a second study in which 20 subjects were interviewed as they solved the same problems. One account of these logically inconsistent responses is that subjects reason about the two questions from different perspectives. When asked to select the most likely outcome, some believe they are being asked to predict what actually will happen, and give the answer “equally likely” to indicate that all of the sequences are possible. This reasoning has been described by Konold (1989) as an “outcome approach” to uncertainty. This prediction scheme does not fit questions worded in terms of the least likely result, and thus some subjects select an incompatible answer based on “representativeness” (Kahneman & Tversky, 1972). These results suggest that the percentage of secondary school students who understand the concept of independence is much lower than the latest NAEP results would lead us to believe and, more generally, point to the difficulty of assessing conceptual understanding with multiple-choice items.

scholarly journals Analysis of The Effect of Changes in Biological Education Student Routine During Covid-19 Pandemic on Learning Spirit and Understanding Lecture Materials

2021 ◽  
Vol 5 (2) ◽  
pp. 106-113
Author(s):  
Iwan Ridwan Yusup ◽  
Sumiyati Sa'adah ◽  
Milla Listiawati ◽  
Idad Suhada
Keyword(s):  
Multiple Choice ◽  
Biology Education ◽  
Learning Activities ◽  
Education Student ◽  
Multiple Choice Questions ◽  
Education Students ◽  
Lecture Material ◽  
Open Questions ◽  
Offline Learning ◽  
Level Of Understanding

Online and offline learning will have a different impact on the level of understanding of students about learning materials. In this study the researchers tried to find out how the learning activities of Biology Education students at UIN Sunan Gunung Djati Bandung during the pandemic were related to changes in routine during the pandemic which affected the enthusiasm for learning and understanding of lecture material during the pandemic compared to before the pandemic. This research uses descriptive research method because in its implementation it includes data, analysis and interpretation of the meaning and data obtained. This study uses a questionnaire, the list of questions is structured in the form of multiple-choice questions and open questions (multiple choice questions and open questions). This method is used to obtain data about the effect of changes in the routine of Biology Education students during the pandemic on learning enthusiasm and understanding the material from respondents. Biology education students admit that there have been significant changes in their routine during the pandemic period. These changes have an impact on student learning activities.

scholarly journals Kesalahan Siswa Dalam Mengidentifikasikan dan Menggambarkan Diagram Gaya

2019 ◽  
Vol 4 (7) ◽  
pp. 844
Author(s):  
Uulia ‘Iffa ◽  
Edi Supriana ◽  
Sutopo Sutopo
Keyword(s):  
Conceptual Understanding ◽  
Survey Methods ◽  
Multiple Choice ◽  
Particle Dynamics ◽  
Research Subjects ◽  
Multiple Choice Tests ◽  
Descriptive Research ◽  
Choice Tests ◽  
Quantitative Descriptive ◽  
Almost All

<p class="Abstrak"><strong>Abstract:</strong> Conceptual understanding is one indicator of success in learning. Mastery of concepts is seen when someone can solve a problem. This study aims to see student's mistakes in identifying and describing diagrams of force, particle dynamics. This type of research uses quantitative descriptive research with survey methods, research subjects amounted to 97 students. The technique of collecting data in the form of reasoned multiple choice tests with alpha cronbach is 0,68. The results of the study show that almost all students experience errors in identifying and describing the style diagrams that work on a system. Common mistakes that cause students to fail to work on problems well are because students are more likely to memorize mathematical formulations of a concept, without knowing how the concept is formed.</p><strong>Abstrak:</strong> Pemahaman konsep yang baik merupakan salah satu indikator keberhasilan dalam pembelajaran. Penguasaan konsep terlihat ketika seseorang dapat memecahkan suatu permasalahan. Penelitian ini bertujuan untuk melihat kesalahan siswa dalam mengidentifikasikan dan menggambarkan diagram gaya suatu permasalahan fisika materi dinamika partikel. Penelitian ini merupakan penelitian deskriptif kuantitatif dengan metode survei. Subjek penelitian berjumlah 97 orang. Teknik pengumpulan data berupa tes pilihan ganda beralasan dengan alpha Cronbach 0,68. Hasil penelitian menunjukkan hampir seluruh siswa mengalami kesalahan dalam mengidentifikan dan menggambarkan diagram gaya yang bekerja pada suatu sistem. Kesalahan umum yang menyebabkan siswa gagal mengerjakan soal dengan baik dikarenakan siswa lebih cenderung menghapal perumusan matematis dari suatu konsep, tanpa mengetahui bagaimana konsep terbentuk.

An Analysis of the Stress Sources and Coping Styles of the Students Majoring in Pre-school Education in Higher Vocational Colleges

2021 ◽  
Vol 7 (5) ◽  
pp. 4375-4383
Author(s):  
Dongliang Liang ◽  
Xionglin Lai
Keyword(s):  
Coping Styles ◽  
School Education ◽  
Research Subjects ◽  
Education Students ◽  
Pressure Source ◽  
School Students ◽  
Work Control ◽  
Higher Vocational College ◽  
And Coping

Objectives: Internship is an effective transition for students to enter society and work posts. Through internship, students can be helped to understand their own shortcomings, recognize the forthcoming workplace environment, and make timely preparations. Methods: To strengthen the follow-up inspection and supervision of the internship process, and increase the investment in the internship funds, effectively improve the level of internship guidance. Results: Through a questionnaire survey of pre-school education students in a higher vocational college, the problems of pre-school education students in the process of practice are sorted out and analyzed. The research shows that the pre-school students in vocational education are the research subjects and explore the source of stress in practice. Conclusion: The research shows that the stressors and internship pressure of pre-school teachers are controlled by the work control experience; the interaction pressure source and work control experience have significant interactions in the practice pressure. Students should be prepared for the internship, actively reserve the theoretical knowledge needed, and develop a clear career plan. Successfully completed the internship teaching session.

Abilities of Physics Education Students in Constructing Graphics Based on Practicum Results and in Interpreting It

2020 ◽  
Vol 3 (1) ◽  
pp. 35-44
Author(s):  
Hariawan Hariawan ◽  
Muslimin Muslimin ◽  
I Komang Werdhiana
Keyword(s):  
Physics Education ◽  
Research Subjects ◽  
Education Students ◽  
Study Program ◽  
Thinking Aloud ◽  
Training And Education ◽  
Education Study ◽  
Basic Physics ◽  
Undergraduate Physics Education ◽  
The Relationship

The skills to construct and interpret graphs are a form of science skills and are an important component in learning physics. The purpose of this study was to describe the ability of undergraduate physics education students to construct graphs based on practicum data and interpret them. Data obtained through respondent answer sheets, thinking-aloud recordings, and interviews. The research was conducted at the Faculty of Teacher Training and Education (FKIP) Untad and the research subjects of the Physics Education Study Program students were 6 people obtained based on the values of Basic Physics I and Basic Physics practicum II then divided into three groups of levels (high, medium, and low) with each category as many as 2 people. The results of this study indicate: 1) in general, respondents in the high, medium, and low categories can construct graphs but are not based on the prerequisite ability to construct graphs, especially in determining the x-axis and y-axis variables, 2) on the ability to interpret graphs, respondents can interpret graphs the relationship between variables on the graph but not supported by an explanation or evaluation based on proper physics concepts, 3) The strategy used by respondents in constructing graphs, in general, is to convert data in decimal form or scientific notation and 4) The difficulties experienced by respondents when constructing graphs are converting data, determining the scale and how to determine the variables on each graph axis.    

Progressive Leukodystrophy-Like Demyelinating Syndromes with MOG-Antibodies in Children: A Rare Under-Recognized Phenotype

2021 ◽  
Author(s):  
Elise Yazbeck ◽  
Hélène Maurey ◽  
Carole Leroy ◽  
Philippe Horellou ◽  
Silvia Napuri ◽  
...  
Keyword(s):  
Brain Magnetic Resonance Imaging ◽  
Brain Biopsy ◽  
Active Immunotherapy ◽  
Oligoclonal Bands ◽  
Second Child ◽  
Fluid Analysis ◽  
Appropriate Treatment ◽  
Neurological Prognosis ◽  
Mog Antibodies

AbstractAcquired demyelinating syndromes (ADS) are frequently associated with myelin oligodendrocytes glycoprotein (MOG) antibodies in children. Clinical phenotypes are heterogeneous and may delay the diagnosis, especially when they relapse and are atypical, mimicking diseases such as multiple sclerosis or neuromyelitis optica spectrum disorders . Here, we describe two children: one with a progressive cognitive and behavioral deterioration with seizures after only one relapse and the other with similar clinical impairments associated with multiple relapses. Brain magnetic resonance imaging revealed a subsequent progressive leukodystrophy-like lesion with diffuse bilateral white matter injuries in both patients. Cerebrospinal fluid analysis showed pleiocytosis, increased level of proteins with no oligoclonal bands. Metabolic and inflammatory blood markers were all negative. Brain biopsy was performed in the second child and nonspecific inflammatory lesions with no argument for histiocytosis or tumor were observed. Clinical and radiological stabilization were obtained after active immunotherapy. Retrospective analysis of anti-MOG antibodies in these two children was positive at the earlier stage of the disease and turned negative after treatment and during follow-up. Leukodystrophy-like ADS with anti-MOG-antibodies may display distinct progressive phenotype and have a severe neurological prognosis. Early diagnosis and appropriate treatment may improve outcome in these children.

scholarly journals Neonatal screening and genotype-phenotype correlation of hyperphenylalaninemia in the Chinese population

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Xin Wang ◽  
Yanyun Wang ◽  
Dingyuan Ma ◽  
Zhilei Zhang ◽  
Yahong Li ◽  
...  
Keyword(s):  
Neonatal Screening ◽  
Phenylalanine Hydroxylase ◽  
Laboratory Data ◽  
Molecular Characteristics ◽  
Phenotype Correlation ◽  
Common Amino Acid ◽  
Appropriate Treatment ◽  
Clinical Presentations ◽  
Average Current

Abstract Background Hyperphenylalaninemia (HPA) is the most common amino acid metabolic disease involving phenylalanine hydroxylase (PAH, OMIM*612,349) deficiency or coenzyme tetrahydrobiopterin (BH4) deficiency. Patients with severe HPA often have a difficult life. Early diagnosis of HPA before the development of symptoms is possible via neonatal screening, facilitating appropriate treatment and reducing mortality and disability rates. This study revealed the prevalence, mutational and phenotypic spectrum, and prognosis of HPA by neonatal screening from January 2001 to September 2020 in Nanjing, Jiangsu Province, China. Methods Through a retrospective analysis of the information available in the neonatal screening database, the clinical presentations, laboratory data, molecular characteristics and treatment follow-up data of HPA patients detected by neonatal screening were evaluated. Results We diagnosed 181 patients with HPA from 1 to 957 newborns, giving an incidence of 1:6873. Among these patients, 177 were identified as PAH deficient and four patients were BH4 deficient. The average current age of the patients was 6.38 years old. The most common mutations of PAH were c.728 C > A/ p.Arg243Gln (13.83 %), c.158G > A/ p.Arg53His (9.57 %), c.611 A > G/ p.Tyr204Cys (7.44 %), and c.721 C > T/ p.Arg241Cys (6.38 %). Conclusions This study revealed the prevalence, phenotype-genotype, and prognosis of HPA in China and contributes to the updating of PAHD data for China and worldwide. Our study not only expanded the spectrum of phenotypes and genotype but also provided a valuable tool for improved genetic counseling and management of future cases.

scholarly journals Role of Radiotherapy in Recurrent Intra-Abdominal Yolk Sac Tumor

2021 ◽  
pp. 1010-1018
Author(s):  
Marhendra Satria Utama ◽  
Andi Kurniadi ◽  
A.A. Citra Yunda Prahastiwi ◽  
Antony A. Adibrata
Keyword(s):  
Case Reports ◽  
Yolk Sac ◽  
Yolk Sac Tumor ◽  
Appropriate Treatment ◽  
Curative Radiotherapy ◽  
Chief Complaints ◽  
Abdominal Mri ◽  
Malignant Germ Cell Tumor

Yolk sac tumor (YST) is a rare malignant germ cell tumor with no appropriate treatment strategy to date. However, patients are treated on a case-to-case basis as per various case reports that have been published. Here, we present a case of 27-year-old female patient who presented to us with chief complaints of severe abdominal pain associated with leucorrhea. She previously had a similar pain episode, which was then evaluated by a multidisciplinary team. She was diagnosed with YST. After that, she underwent 6 cycles of chemotherapy, but there was no improvement. Then the medical oncologist referred her to performed radiotherapy. Then, the radiation oncologist decided to give her curative radiotherapy of 3D-CRT. After completing her sessions, she felt better and clinically improving. After that, she was discharged and scheduled a follow-up visit for first evaluation. At her follow-up visit, she was feeling well, and we decided to have an abdominal MRI.

scholarly journals The Relationship between Learning Styles and Academic Performance: Consistency among Multiple Assessment Methods in Psychology and Education Students

2021 ◽  
Vol 13 (6) ◽  
pp. 3341
Author(s):  
Jesús Maya ◽  
Juan F. Luesia ◽  
Javier Pérez-Padilla
Keyword(s):  
Early Childhood ◽  
Academic Performance ◽  
Learning Styles ◽  
Primary Education ◽  
High Performance ◽  
Multiple Choice ◽  
Assessment Methods ◽  
Theory And Practice ◽  
Education Students ◽  
The Relationship

Universities strive to ensure quality education focused on the diversity of the student body. According to experiential learning theory, students display different learning preferences. This study has a three-fold objective: to compare learning styles based on personal and educational variables, to analyze the association between learning styles, the level of academic performance, and consistency of performance in four assessment methods, and to examine the influence of learning dimensions in students with medium-high performance in the assessment methods. An interdisciplinary approach was designed involving 289 psychology, early childhood education and primary education students at two universities in Spain. The Learning Style Inventory was used to assess learning styles and dimensions. The assessment methods used in the developmental psychology course included the following question formats: multiple-choice, short answer, creation-elaboration and an elaboration question on the relationship between theory and practice. Univariate analysis, multivariate analysis, and binomial logistic models were computed. The results reveal Psychology students to be more assimilative (theoretical and abstract), while early childhood and primary education students were evenly distributed among styles and were more divergent and convergent (practical) in absolute terms. In addition, high scores in perception (abstract conceptualization) were associated with a high level of performance on the multiple-choice tests and the elaboration question on the relationship between theory and practice. Abstract conceptualization was also associated with medium-high performance in all assessment methods and this variable predicted consistent high performance, independent of the assessment method. This study highlights the importance of promoting abstract conceptualization. Recommendations for enhancing this learning dimension are presented.

scholarly journals IsHelicobacter pyloriBeing Treated Appropriately? A Study of Inpatients and Outpatients in a Tertiary Care Centre

2007 ◽  
Vol 21 (5) ◽  
pp. 285-288 ◽  
Author(s):  
Jose Nazareno ◽  
David K Driman ◽  
Paul Adams
Keyword(s):  
Tertiary Care ◽  
Gastric Biopsy ◽  
Pathology Report ◽  
Tertiary Care Centre ◽  
Delivery Of Care ◽  
Ulcer Disease ◽  
Appropriate Treatment ◽  
Significant Difference ◽  
H Pylori

BACKGROUND:Helicobacter pyloriis causally associated with peptic ulcer disease and gastric cancer. Although effective treatment is available, studies have shown that patients withH pyloriare often not well managed. Recently, there has also been increasing awareness of patient safety concerns arising from missed follow-up of abnormal test results.OBJECTIVE: To examine whether inpatients and outpatients diagnosed withH pylorireceive appropriate treatment.PATIENTS AND METHODS: All patients who were diagnosed withH pyloriby gastric biopsy in London, Ontario between January 1, 2004, and December 31, 2004, were identified. The hospital charts of these patients were reviewed. Outpatient office charts, clinic notes, pathology reports and endoscopy reports were also reviewed.RESULTS: One hundred ninety-three patients were diagnosed withH pyloriby gastric biopsy in 2004. Of the 193 patients, 143 (74%) were outpatients and 50 (26%) were inpatients. Overall, 89% of patients received treatment forH pylori. Ninety-two per cent of outpatients were treated, while only 60% of inpatients received treatment (P<0.001). Among the inpatients, the pathology report was available in 40% of the cases before the patient was discharged from the hospital. After discharge from the hospital, 30% of inpatients received appropriate treatment and follow-up. There was no significant difference in treatment whether the patient was admitted to a medical or a nonmedical service.CONCLUSION:H pyloriis treated relatively poorly in inpatients compared with outpatients. Results of the present study reveal opportunities to improve delivery of care for inpatients on a number of different levels. More research is needed to ensure safety, effectiveness and timeliness in the test result management process.

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