bluuebunny/crossref_metadata_2025 huggingface dataset:
Navigating fear: Exploring speaking problems among students at junior high school level
Authors: Palomargareta Gebriela , Astutik Yuli
Published: May 2024

This study delves into the intricacies of speaking problems encountered by junior high school students while learning English. Employing a descriptive qualitative approach, six participants representing both high and low proficiency levels were selected from a private junior high school in Sidoarjo, Indonesia. Data collection involved observation and interviews based on Ur’s (1991) framework of speaking problems, encompassing inhibition, lack of content, uneven participation, and native language interference. The research findings revealed that students across proficiency levels faced speaking problems. Interestingly, junior high-level students also have difficulty speaking in English class. While observation data suggested a discrepancy in speaking problems between high and low students, in-depth interviews uncovered shared challenges. Notably, inhibition, lack of content, and native language interference were prevalent among participants. These findings underscore the imperative for students to bolster confidence in speaking English through consistent practice inside and outside the classroom. Furthermore, educators must enhance their pedagogical strategies, particularly in cultivating diverse speaking skills to facilitate students’ English language acquisition.
The effect of CAR on English language teachers’ beliefs about action research
Authors: Legesse Ayele , Kitila Tamene
Published: May 2024

This study examined the effect of collaborative action research (CAR) on secondary school English language teachers' beliefs about and perceived competency in conducting action research. A quasi-experimental design with pre- and post-test measures within a single group was employed. The intervention involved a one-day training workshop followed by 15 months of active CAR engagement. Data were collected via questionnaires from 37 English language teachers (21 in the experimental group and 16 in the control group) at two secondary schools in Mettu town, Ethiopia. The results revealed a positive transformative effect of CAR on teachers’ beliefs about action research. Their perceived competency in conducting action research as part of their teaching duties also improved significantly. These findings suggest that CAR empowers teachers to become self-directed, collaborative problem solvers within their classrooms rather than passively waiting for external solutions. However, the study’s limitations, including its single-group design and focus on two schools, necessitate further research. Future studies, particularly in-depth qualitative investigations, are recommended to explore the practical changes in teaching practices driven by CAR and to diversify the subject group and research methods for broader insights.
MOTIVASI BELAJAR MATEMATIKA SISWA PADA PROJECT BASED LEARNING DENGAN PENDEKATAN TECHNOLOGICAL PEDAGOGICAL AND CONTENT KNOWLEDGE
Authors: Muawanah Muawanah , Romadhona Reny , Cipta Dyah Ayu Sulistyaning
Published: May 2024

The aim of this research is to increase students' learning motivation which is eroded by the presence of gadgets. The low motivation to learn mathematics is the background for the research conducted by researchers in class VII of Sukodono Islamic Middle School. To respond to this, the researchers conducted classroom action research which aims to increase students' learning motivation so that can increase the achievement of learning objectives in accordance with the implementation of the curriculum in schools. Students' learning motivation will emerge if they are directly involved in the learning process, one of the innovative learning models that involves students is the PjBL model. The steps in the PjBL model require students to think critically, creatively and innovatively in solving problems given by educators. Apart from using learning models that involve students, using interesting learning media can increase learning motivation. One application that can be used as a learning medium that increases student motivation is the Canva application. Therefore, researchers used the PjBL model with Canva media in research which is expected to increase the motivation of class VII students at Sukodono Islamic Middle School in PLSV material. The results of this research show that 2 students or 8.7% of the 23 students have not met the criteria for achieving learning objectives. The author concludes that the PjBL model is recommended to be applied to mathematics learning.
ANALISIS KESULITAN SISWA BERDASARKAN GENDER DALAM MENYELESAIKAN PERMASALAHAN MATEMATIS
Authors: Ina Marselina , Yuwono Timbul , Murniasih Tatik Retno
Published: May 2024

The aim of this research is to analyze the mathematical problem solving abilities of class VIII middle school students based on the student's gender. This research is a qualitative descriptive study. The subjects in this research were 23 students in class VIII of Malang National Middle School, consisting of 11 male students and 12 female students. Then 6 subjects were selected, namely 3 men and 3 women who had mathematical problem solving abilities in the high, medium and low categories. The research was carried out in the second semester of the 2022/2023 academic year. Analysis was carried out by giving a written test in the form of 2 essay questions. The material tested is problem solving questions related to the Pythagorean theorem. The results of the analysis of students' problem solving abilities were obtained based on the results of student work and interviews. The results of this study indicate that female students' mathematical problem solving abilities are better than male students in solving problems related to the Pythagorean theorem.
PENGEMBANGAN MEDIA MONOPOLI BERBAHAN LOOSEPART UNTUK MENINGKATKAN KEMAMPUAN LOGIKA MATEMATIKA
Authors: Wahyuhidayati Ifa Putri , Argarini Dian Fitri
Published: May 2024

This research aims to determine the feasibility of the monopoly media "MAK (FUN MATHEMATICS" ROUND" made from loose parts for children aged 5-6 years. This research is research using research and development methods or what is called Research and Development (R&D) using a development model ADDIE. The subjects of this research were group A at Darul Hikmah Kindergarten, totaling 10 children consisting of 5 boys and 5 boys. women. In this study, media validation and observation validation of learning outcomes were carried out first by material experts and media experts, after that the validator produced an evaluation of the media and observation sheets used. The aim was to test the suitability of the media used. Research instruments used in the research This is an observation sheet that has been validated by experts. The indicators of the development of mathematical logic studied are knowing simple classifications, knowing numbers, knowing arithmetic operations, knowing geometric shapes. Learning media with the MAK ROUND monopoly game using loosepart media which was developed for group A2 children at DARUL HIKMAH Kindergarten has been validated by experts and received a percentage score of 92.72%. This shows that the MAK ROUND monopoly is declared worthy of being tested. Before being given treatment, the average acquisition of mathematical logic skills was below average, namely 66.8% and was declared incomplete. This means that children's mathematical logic is still low. After being given treatment, the average gain in mathematical logic skills in group A2 children increased to 84.7%. This shows that learning media using the MAK ROUND monopoly game is effective in improving mathematical logic skills in group A children aged 5-6 years.
ANALISIS KEMAMPUAN NUMERIK SISWA DITINJAU BERDASARKAN GAYA KOGNITIF
Authors: Halizah Nur , Napfiah Siti
Published: May 2024

Numerical ability is the ability to solve problems related to numbers. The aim of this research is to describe students' numerical abilities based on cognitive style. Several existing studies analyze numerical abilities based on reflective and impulsive styles. In this research, the analysis was carried out based on field dependent and field independent cognitive styles. This type of research was descriptive qualitative. Indicators of numerical ability consist of the ability to solve problems, the ability to calculate mathematically, and the ability to think logically. In this research, students can explain problem solving carried out logically and systematically based on concepts in number material. This research was conducted on integer material at MTs Miftahul Ulum Ngingit, Malang Regency. The subjects of this research were 7th grade students, where 19 children were asked to take the GEFT test and then 2 people would be selected, 1 student with a field dependent cognitive style and 1 student with a field independent cognitive style. Then the 2 students were given a test and an interview was conducted to determine the students' numerical abilities. Based on the research results, it was concluded that the numerical abilities of field dependent students were relatively low because they had not achieved all the indicators. Meanwhile, field independent students' numerical abilities are moderate because they have achieved 2 indicators but in the final result the answers are still wrong.
MINAT BELAJAR MATEMATIKA DALAM PERMAINAN TRADISIONAL ENGKLEK
Authors: Wardani Dinda Kusuma , Kuryanto M. Syaffrudin
Published: May 2024

This research aims to find out the level of student interest in learning the traditional game of engklek in the context of mathematics learning. This research used a qualitative approach and was conducted in Kropak Village, Winong District, Pati Regency. The research subjects consisted of the homeroom teacher and several class V students at SDN Kropak 02. The data collection methods applied included observation, interviews and documentation. Data analysis uses techniques introduced by Miles and Huberman, namely data reduction, data collection, and drawing conclusions. This research focuses on four students out of a total of 20 students in the class. The four students who were research subjects had the initials AA, RR, SW, and PLC, which previously indicated a lack of interest in mathematics subjects. Through observations of student responses and the results of interviews with teachers, it can be concluded that the integration of the traditional engklek game in the learning process is able to generate interest in learning and student involvement. Findings from the research show an increase in student interest in learning, reflected in the high level of student enthusiasm during the learning process. They seemed more enthusiastic and active in participating in learning activities and showed greater interest in the material being taught.
PENGEMBANGAN LEMBAR KERJA SISWA MATERI GARIS SUDUT BERORIENTASI ETNOMATEMATIKA SENI GERAKAN PENCAK SILAT GASMI
Authors: Rifqi Ahmad Rifqi , Sulisawati Dwi Noviani , Cahyo Dimas Andhita
Published: May 2024

This research aims to describe the process and results of developing ethnomathematics-oriented teaching materials that are valid, practical and effective. This research uses the ADDIE development model which consists of 5 stages, namely analysis, design, development, implementation, evaluation. The instruments used include  validation sheet, implementation observation sheet, student response questionnaire, and test question sheet. The subjects of this research were 16 class VII students at SMP Kartika IV-6 Ambulu. The quality of teaching materials viewed from the validity aspect is included in the valid category with the assessment average of media experts is 3.77 with valid category. Material expert assessment average is 3.87 with valid category. RPP validation assessment average is 4.08 in the valid category. Validation assessment average of implementation observations is 4.6 with very valid category. Student response questionnaire assessment average is 4,08 with valid category. Assessment average of test questions is 4.54 with a very valid category. The practical aspect of the LKS was obtained from the results of implementation observations with a score of 87.5% and the results of the student response questionnaire with a score of 84.62% with the category very practical. From the aspect of the effectiveness of the LKS, it can be seen from the student test results with a score of 86.67%. In this way, the ethnomathematics-oriented teaching materials developed meet the aspects of validity, practicality and effectiveness.
IMPLEMENTASI MODEL PEMBELAJARAN BERBASIS PROYEK UNTUK MENGIDENTIFIKASI KEMAMPUAN BERPIKIR KREATIF MAHASISWA MATEMATIKA
Authors: Z Gusmanely , Yurinanda Sherli , Sarmada Sarmada
Published: May 2024

Advanced calculus is a mandatory subject in the Mathematics Study Program, Faculty of Science and Technology, Jambi University. Advanced Calculus studies functions of multiple variables, ordinary derivatives, partial derivatives, double integrals, fold integrals, applications of double integrals, triple integrals and applications of triple integrals. CPL from the advanced calculus course includes students being able to develop mathematical thinking starting from procedural/computational understanding to a broad understanding including exploration, logical reasoning, generalization, abstraction and formal proof. One learning model that facilitates students to fulfill the CPL for advanced Calculus courses is the project-based learning model (Project-based Learning). It is hoped that the Project-Based Learning model can be a learning alternative to help students think creatively in learning Advanced Calculus. It is hoped that the creative thinking abilities of Mathematics Study Program students will increase and support the fulfillment of CPL courses which will result in the formation of creative and systematic mathematics students who are skilled in solving problems and have the capabilities and competencies needed by the world of work (industry, services and government). The results of the analysis showed that the creative thinking abilities of students in class R001 were classified as creative and 1 group was very creative, while in R002 all groups were classified as very creative. The conclusions of this research show a tendency for students' creative thinking abilities to be in the creative category.
KEMAMPUAN BERPIKIR KREATIF SISWA DALAM MENYELESAIKAN MASALAH KONTEKSTUAL SISTEM PERSAMAAN LINEAR DUA VARIABEL BERBANTUAN GEOGEBRA
Authors: Wulandari Hilaria Yesieka Ayu
Published: May 2024

The purpose of this study is to describe students' ability to think creatively when facing SPLDV problems in certain contexts using the help of Geogebra. This research is qualitative research that uses the case study method to deeply understand students' creative thinking abilities. Two grade VIII junior high school students with varying initial ability levels of SPLDV were the subjects of this study. The instruments used include the SPLDV initial ability test, creative thinking ability test using Geogebra, and interview guidelines. The creative thinking test consists of four question points that measure indicators of fluency, flexibility, and novelty, with a completion time of 45 minutes. The results showed that students with high abilities could achieve the creative category (TKBK 3) because they were able to meet all indicators of fluency and novelty. Students can provide various alternative answers and use various logical strategies in solving problems. On the other hand, students with low abilities tend to fall into the less creative category (TKBK 1) because they can only meet the fluency indicator. Although subjects can provide a variety of alternative answers that are appropriate, they have not been able to describe the use of diverse strategies in solving problems.
PENGEMBANGAN MODUL DENGAN MENGINTEGRASIKAN NILAI KEISLAMANAN PADA MATERI GARIS DAN SUDUT
Authors: Mustakim Mida Wardatus , Ambarawati Mika
Published: May 2024

Mathematics is a very important area of education. Learning mathematics is not just about remembering what formulas they learn, but how to apply mathematical material, in order to produce students who not only have cognitive abilities. The teaching module better if there was a teaching module that integrated Islamic values in writing. The type of research used is a development research. The development model used is the ADDIE (Analysis, Design, Development, Implementation, Evaluation) model. The development of a mathematics teaching module that integrates Islamic values in the subject of lines and angles is suitable (valid) for use as a teaching module by looking at the validation from Islamic religious experts of 71.43% and 85.71%, validation of mathematicians at 85.71%, mathematics teacher validation was 85.71%, and peer validation was 100%. Student responses to the mathematics module that integrated Islamic values produced an average of 86.92% in small-scale trials with interesting criteria.
CIVIS
Authors:   , Boers Kay
Published: May 2024

This dissertation presents an in-depth study of the rhetorical and heuristic use of the Latin term civis (transl. "citizen") in texts produced in seventh-century Hispania. This was a world in which both the social and political order and the language through which this order was expressed were still strongly anchored in a Roman past and in which thinking about the meaning and function of language was a fundamental part of intellectual culture. This emphasis on language is perhaps best illustrated by the corpus of Bishop Isidorus of Seville which encloses several texts specifically focused on establishing the origin, meaning and function of language, such as De Differentiis Verborum and the Etymologies. But is also illustrated by the series of church councils organized during this period. These councils form a returning thread throughout this study as moments where bishops and kings sought to codify their vision of reality and the language by which it was expressed. The texts produced by the participants in these councils present fragmentary remnants of attempts to navigate certain religious and political crises that, in the eyes of contemporaries, had seriously undermined ecclesiastical and political unity in the Iberian Peninsula. This thesis seeks to establish what role civis played in interpreting these crises and in articulating the supposed remedies by which those crises could be navigated.
Tics Temporally Associated with Mild Traumatic Brain Injury in Pediatric Patients: A Sui Generis Case Series
Authors: Yasmin S.M. Taslima , Yasmin S.M. Taniya , Jenkins Mary E. , Abdulsatar Farah
Published: May 2024

Traumatic brain injury (TBI) is a major public health concern in Canada, with falls, blows to the head, car accidents, and sports-related injuries being the leading causes. Post-traumatic movement disorders, such as tics, can occur after a TBI, but their association with mild TBIs has been less explored. This manuscript presents two pediatric cases of de novo tics following mild TBIs, shedding light on this unique phenomenon. Possible mechanisms linking mild TBI and tics, such as genetic predisposition and stress-induced activation of the hypothalamic-pituitary-adrenal axis, are discussed. This paper emphasizes the importance of recognizing tics as a potential consequence of mild TBIs in children, and underscores the need for further research to shed light on the mechanism involved.
A dementia nôi aspektusai
Authors: Kovács Tibor
Published: May 2024

A dementia a 21. század népbetegsége, az öregedő társadalmak új epidémiája. Az életkor mellett a női nem a módosíthatatlan kockázati tényezők egyike. A dementiák kétharmadáért az Alzheimer-kór a felelős, ahol a nők a betegek kétharmadát teszik ki. Más degeneratív dementiaformákban (Lewy-testes dementia, frontotemporalis dementia), illetve a vascularis dementiában nem figyelhető meg női túlsúly. A nők fokozott kockázatának hátterében elsősorban a hormonális tényezők szerepe merül fel.
Музичне мистецтво у маєтковій культурі Правобережної України кінця XVIII – початку ХХ ст.
Authors: Кривошея Ігор
Published: May 2024

У статті представлений аналіз музичного мистецтва в резиденціях Правобережної України кінця XVIII - поч. XX ст. включно із вагомим впливом шляхти та польської аристократії. Розглядається музичне мистецтво як частина маєткової культури, зокрема огляд оркестрів і музикантів, а також професійних та аматорських колективів, що відіграли вагоме значення у збереженні та популяризації музичної спадщини. Висвітлено еволюцію ролі та місця музичного мистецтва в умовах культурної та політичної динаміки регіону, його поступове наповнення національними мотивами у модерну добу.
Обставини перепоховання Тараса Шевченка у листах і спогадах Григорія Честахівськогo
Authors: Воронов Віктор
Published: May 2024

На основі епістолярій і фрагментів спогадів члена української громади у Санкт-Петербурзі, українського художника Григорія Честахівського реконструюються обставини перевезення та подальшого перепоховання в Каневі тіла визначного українського поета, художника та громадського діяча Тараса Шевченка. Характеризується інформаційний потенціал та наукове значення листів і мемуарних нотаток Г. Честахівського для подальшого розвитку шевченкознавства. З’ясовуються витоки й особливості формування, подальшої міфологізації та сакралізації образу Т. Шевченка серед народних мас України протягом перших місяців після його смерті. Встановлюється роль Г. Честахівського та українських громадівців, з якими він контактував, у цьому процесі.
Консеквенція Польського Січневого повстання для інституту предводителя дворянства на Правобережній Україні (60-ті роки ХІХ ст.)
Authors: Барвінок Ольга
Published: May 2024

Відлунням поразки Польського Січневого повстання у Південно-Західному Краї Російської імперії стало посилення економічного та політичного тиску на місцеве дворянство, яке у розумінні самодержавства повинне бути опорою влади. Оскільки у Київській, Волинській і Подільській губерніях інститути влади були представлені у переважній більшості службовцями польського походження, це стало приводом посилення русифікаторської політики шляхом обмеження станового самоврядування в регіоні. У статті акцентується увага на перехідному періоді зміни кадрової політики з перспективи інституту предводителя дворянства. Губернські предводителі нової генерації виступали суб’єктами посилення русифікації регіону.
Фінансування. Стаття підготовлена під час перебування на стипендіальній програмі Research Perspektive Ukraine в Німецькому Історичному Інституті у Варшаві.
Світлій пам’яті невтомної трудівниці Ірини Миколаївни Шарафутдінової (1929-2024)
Authors: Отрощенко Віталій , Фоменко Віктор
Published: May 2024

Світлій пам’яті невтомної трудівниці Ірини Миколаївни Шарафутдінової (1929-2024)
Станова ієрархія польської шляхти Українського Правобережжя як перешкода національній консолідації та боротьбі за відродження державності середини ХІХ ст.
Authors: Земський Юрій
Published: May 2024

Ліквідація Польської держави наприкінці XVIII ст. визначила зміст політичної поведінки польської шляхти на ціле наступне ХІХ ст. Усвідомлюючи себе державотворчою верствою – шляхта (принаймні, освічені її представники) переймалася проблемою порятування національної гідності, а також відновлення повноти власних прав на теренах «усіх історично-завойованих земель», тобто включно з Правобережжям України. Такі переконання зумовили неминучість вибухів національно-визвольних повстань. Водночас, на середину ХІХ ст. частина шляхти була впевнена, що успіху можливо досягти лише за умови загальнонаціональної консолідації усіх верств соціуму, включно із селянами. Проте, в аристократичних колах (найбільш заможної шляхти) переважаючими залишалися бажання зберегти станову ієрархію та власні привілеї недоторканими. Крім того, політика Російської імперії була спрямована на те, аби максимально поглиблювати протиріччя поміж представниками різних щаблів шляхетської ієрархії, й така політика була успішною. Разючі контрасти характеру життя представників різних щаблів ієрархії шляхетської верстви – у повсякденному побуті, у ставленні до освіти, фізичної праці тощо – позначилися у різних проектах (баченнях) реалізації жаданої мети, а відтак завадили її здійсненню.
Чоботарська сільськогосподарська реміснича школа: сторінки невідомої історії аграрної освіти (1907-1921 рр.)
Authors: Тригуб Олександр , Степанчук Юрій
Published: May 2024

Історія професійної освіти на Поділлі, без перебільшення, залишається у колі малодосліджених проблем історичної науки. Саме тому автори поставили своєю метою розкрити на основі архівних документів становлення та дорадянський розвиток Чоботарської нижчої сільськогосподарської ремісничої школи імені М.С. Іваніни (с. Чоботарка, нині – с. Заболотне), яка ще не знайшла свого належного висвітлення.
Чоботарська реміснича школа постала у 1907 р. внаслідок ініціативи місцевого селянства, яке бажало дати дітям безкоштовну освіту з професійним ухилом. Ключова роль в її відкритті та початковому фінансуванні належала заможному селянину Максиму Степановичу Іваніні. Офіційне відкриття школи відбулося 20 грудня 1907 р. Фінансування школи здійснювала держава, губернське та повітове земство, чоботарська сільська громада. Школа мала три відділення: столярно-токарне, слюсарсько-ковальське та сільськогосподарське. При цьому сільськогосподарський профіль з’явився лише у 1911 р. і мав другорядне значення, тобто школа була, насамперед ремісничою. Термін навчання учнів був чотирирічним. Усі учні навчалися в одному класі, а розподіл по професіям відбувався в 2-3 класах.
Не дивлячись на позитивну динаміку свого розвитку – побудову власної будівлі, швидке поповнення майстерень устаткуванням і бібліотеки літературою, школа мала і певні вади. Так, школі були притаманні швидкоплинність викладачів і службовців та певна несталість учнівського контингенту. Якщо факт залишення учнями навчання легко пояснити – сімейні обставини, неуспішність у навчанні тощо, то швидку зміну викладачів пояснюємо важкими умовами життя у сільській місцевості та прагненням викладачів знайти місце у містечках і містах.
Попри усі труднощі часів Першої світової війни та Української революції, радянсько-польської війни та післявоєнної руйнації, навчальному закладу вдалося встояти і він до сьогодні готує фахівців для економіки подільського регіону.
Фінансування. Стаття підготовлена за результатами фундаментального дослідження «Соціокультурний простір України другої половини ХІХ – першої третини ХХ ст.: селянський світ» (номер державної реєстрації: 0123U101600) за підтримки Міністерства освіти і науки України.
Історія формування китайської діаспори у США
Authors: Габро Ірина
Published: May 2024

Статтю присвячено аналізу процесу формування китайської діаспори у США. Китайська імміграція до Сполучених Штатів Америки має довготривалу історію та бере свій початок з XVIII ст. У статті розкрито основні етапи формування китайської діаспори у США. Автор виокремлює три ключові хвилі китайської міграції до США: перша хвиля бере початок із середини XIX ст. до 1949 року; другий етап китайської імміграції до Сполучених Штатів тривав з 1949 до 1970-тих років; третя хвиля китайської імміграції на територію Сполучених Штатів охоплює період від 1980 року до сьогодні. Основними особливостями формування китайської діаспори у США стали наслідки тимчасового економічного спаду на території КНР після культурної революції, спроби вищого класу китайського населення забезпечити кращу освіту для наступного покоління, занепокоєння з приводу повернення території Гонконгу до Китаю, спроби підвищити свій рівень доходів, ліберальна політика США щодо китайських мігрантів, які стали учасниками та свідками політичних негараздів всередині КНР, нестачі свободи слова на батьківщині.
Роль і вплив російського військового контингенту в придністровському регіоні на хід російсько-української війни: склад і спроможності ОВТ, оцінка воєнних загроз
Authors: Крет Микола , Филипенко Артем
Published: May 2024

У статті висвітлена історія російського військового контингенту на території Придністровського регіону Республіки Молдова (ПРРМ), проаналізований його воєнний потенціал і визначений характер воєнних загроз національній безпеці України, які становить зазначений контингент. Показана дестабілізуюча роль, яку відігравав протягом російський військовий контингент у ПРРМ з початку російсько-української війни, й особливо з початку широкомасштабного вторгнення російської федерації в Україну у лютому 2022 р. Висвітлений стан оснащення російського військового контингенту зразками озброєння та військової техніки, а також заходи щодо підвищення обороноздатності, що вживалися в 2022-2023 рр. Республікою Молдова.
Estudo Comparativo sobre o Ensino de Matemática em Reformas Educacionais da Educação Secundária
Authors: Gonçalves Harryson Junio Lessa , Araujo de Souza Carla , Novaes Joana Inês , Santana Marcela Lopes de , Penha Ana Greice Moreira
Published: May 2024

O mundo moderno nos impõe uma necessidade para a compreensão das influências (Quais? Quem? Onde?) que têm sofrido os diversos países. Assim, concebemos este artigo com resultados de uma pesquisa cujo objetivo era “discutir sobre currículo de matemática na organização curricular da educação secundária de países latino-americanos que recentemente passaram por reformas educacionais (Brasil, Bolívia e México), caracterizando, nessas reformas a concepção de esfera pública empreendida nos processos de planificação e implementação desses currículos, bem como os aspectos teóricos que os consubstanciam”. Tratou-se de uma pesquisa qualitativa (descritiva e explicativa), desencadeada a partir das seguintes fases: análises bibliográficas e documental e entrevistas com professores de matemática. No âmbito do Brasil e México a pesquisa evidenciou uma ação estratégica, orientada por organismos internacionais, na qual reduziu a participação democrática dos professores. Todavia, temos o sistema boliviano como insurgente ao modelo neoliberal, concebendo um agir comunicativo no que tange aos currículos regionalizados.
A Conversão das Representações Semióticas da Função Afim e a Linear:
Authors: Batista Niusláyne , Lucia Merlini Vera
Published: May 2024

Resumo: Este estudo tem por objetivo analisar o desempenho e a competência de conversão do registro de representação, da linguagem natural para o numérico, frente a questões de Funções Afim e Linear de estudantes do Ensino Médio. O aporte teórico baseia-se na Teoria dos Registros de Representação Semiótica de Duval. Trata-se de pesquisa diagnóstica de caráter descritivo, realizada com 85 estudantes da 1º série do Ensino Médio, que responderam dois questionários com seis questões cada que, para efeito deste estudo, foram analisadas e discutidas duas delas. De acordo com os resultados da análise dos dados, foi possível observar que os estudantes têm bom domínio na conversão da linguagem natural para o registro numérico, tanto do ponto de vista do desempenho quanto do ponto de vista da competência da conversão de registro.
Palavras-chave: Registro na linguagem natural. Registro numérico. Diagnóstico. Desempenho. Níveis de conversão.
Olhares a respeito dos indícios da Educação Financeira presente nos Projetos Integradores aprovados no PNLD/2021
Authors: Mélo Leite Joilson , Paula Enio Freire de
Published: May 2024

Neste artigo, debateremos, à luz do paradigma indiciário de Carlo Ginzburg, as discussões a respeito da Educação Financeira (EF) identificadas entre as obras de Projetos Integradores (PI) aprovados no Programa Nacional do Livro e do Material Didático em 2021 (PNLD/2021). Essas obras didáticas, têm como objetivo contribuir para contextualização do currículo, fomentando o interesse das(os) estudantes por meio da interdisciplinaridade. Aliado a esse ponto e frente o crescente interesse e fomento de discussões e ações direcionadas a tratar a EF na Educação Básica, a partir da Estratégia Nacional de Educação Financeira, compreendemos que analisar como as discussões a respeito dessa temática se apresentam nos PI mostra-se como uma temática pertinente. Por esse motivo, constituímos um corpus composto por 13 projetos a partir dos indícios relacionados à EF. Ao analisarmos o corpus sob os dois agrupamentos que construímos, os resultados revelam que: (i) há uma forte tendência em discutir a EF em contextos que problematizam noções de economia e empreendedorismo em uma perspectiva pela busca do autoconhecimento e (ii) temáticas envoltas à sustentabilidade ambiental são utilizadas como meio introdutório das discussões de conceitos relacionados à EF.
Sobre a “Contextualização” na Modelagem Matemática na Educação Matemática
Authors: Schwendler Denise , Klüber Tiago Emanuel , Tambarussi Carla Melli
Published: May 2024

O presente artigo expõe compreensões que emergiram do estudo sobre como se mostra o termo contextualização em estudos de sujeitos significativos da MM na Educação Matemática? Para tanto, buscamos pelo termo contextualização e as derivações contexto, contextualizar e contextuar em textos de sete autores que são significativos na área da Modelagem Matemática, sendo eles: Lourdes Maria Werle de Almeida, Jussara Loyola de Araújo; Jonei Cerqueira Barbosa; Rodney Carlos Bassanezi; Maria Salett Biembengut; Dionísio Burak; Ademir Donizeti Caldeira. Com um estudo meta-analítico esclarecemos os sentidos da contextualização e contexto como determinação, lugar que, articulação entre e meio de desenvolver. Destacamos a necessidade de atenção em relação ao uso de termos de modo naturalizado, abrindo possibilidades em novas investigações.
Professores Iniciantes que Ensinam Matemática e seus dizeres sobre a Docência
Authors: Pozzobon Marta Cristina , Dutra Rodrigues Conrado Gabriela , Oliveira da Fonseca Letiane
Published: May 2024

Este artigo problematiza os dizeres sobre a docência dos professores iniciantes que ensinam Matemática, egressos de um curso de licenciatura em Matemática.  A materialidade da pesquisa é constituída dos dados produzidos em um questionário organizado no Google Forms, respondido por catorze professores em início da docência. Os ditos descrevem sobre os desafios, as dificuldades, os sentimentos e as possibilidades do exercício profissional no ensino presencial e no ensino remoto, no que tange a (in)disciplina dos estudantes e interesse pela aprendizagem; os modos de comunicação produzidos na pandemia; a insatisfação, as preocupações e a esperança, que ultrapassam as dimensões do conhecimento, nos modos de ser e de se conduzir diante do contexto escolar, dos alunos e das aulas. Considera-se a impossibilidade de separação entre o professor e a pessoa, para que se produza movimentos de pensamento e compromisso com a docência.
Conhecimento especializado para ensinar Geometria face à BNCC
Authors: Pupo Ribeiro Jocilene , Teixeira Brandalise Mary Ângela
Published: May 2024

Este artigo apresenta uma análise do conhecimento especializado de professoras polivalentes, atuantes nos anos iniciais do Ensino Fundamental, sobre os objetos de conhecimento do eixo temático de Geometria propostos na Base Nacional Comum Curricular (BNCC). Os pressupostos teóricos da pesquisa foram delineados com base no modelo teórico-analítico de Carrillo et al. (2014), denominado Mathematics teacher’s specialised knowledge (MTSK) e com a Teoria dos Van Hiele sobre os níveis do pensamento geométrico. A pesquisa, do tipo estudo de caso, foi realizada com professoras de escolas públicas de um município paranaense e o instrumento de coleta de dados foi o questionário CORE. Segundo os níveis do pensamento geométrico da teoria dos Van Hiele, pode-se inferir que o conhecimento das professoras polivalentes se encontra entre os níveis de visualização e de dedução informal, o que pode justificar a ênfase do ensino de Geometria à identificação e à apresentação da nomenclatura das figuras planas, em detrimento de conteúdos mais complexos propostos no currículo escolar. Constatou-se que as fragilidades sobre os conhecimentos específicos de Geometria também ficaram evidentes quando se investigou o conhecimento pedagógico de Geometria, fortalecendo a hipótese de que se o professor apresenta dificuldades na compreensão de um conceito geométrico, poderá ter para ensiná-lo.
Akuntansi, MYOB, Perusahaan Manufaktur
Authors: Harahap Baru , Tukino Tukino , Maulana Algifanri
Published: May 2024

SMK yang berlokasi saling berdekatan, tetapi belum sinergi dalam pemanfaatan sumber daya yang ada di masing-masing sekolah dipandang kurang efisien. Di sisi lain beberapa SMK mempunyai sumber daya yang memadai dan cukup potensial untuk memperluas dan sekaligus meningkatkan pelayanan pendidikan terhadap masyarakat melalui berbagai program pendidikan dan latihan. Berkaitan dengan kondisi tersebut, Direktorat Pembinaan Sekolah Menengah Kejuruan memprogramkan untuk menggabungkan sekolah tersebut dalam satu manajemen dan meningkatkan daya tampung SMK melalui berbagai program pendidikan dan pelatihan dengan nama Pengembangan SMK Besar. Laporan Keuangan berfungsi sebagai alat untuk menganalisis kinerja keuangan yang dapat memberikan informasi tentang posisi keuangan, usaha, kinerja dan arus kas sehingga dapat dijadikan dasar membuat keputusan-keputusan ekonomi. Objek pengabdian ini, ditujukan kepada Sekolah Menengah Kejuruan (SMK) Batam Business School di sekitar Kelurahan Sekaran yang mayoritas pelaku Sekolah Menengah Kejuruan (SMK) Batam Business School belum memiliki laporan keuangan. T labaujuan program pengabdian ini adalah  memberikan pelatihan kepada pelaku Sekolah Menengah Kejuruan (SMK) Batam Business School dalam penyusunan akuntansi berbasis Standar Akuntansi Keuangan Entitas Tanpa Akuntabilitas Publik (SAK ETAP) serta untuk merancang sistem akuntansi sederhana secara manual maupun terkomputerisasi yang dapat membantu dan memudahkan para pelaku Sekolah Menengah Kejuruan (SMK) Batam Business School dalam membuat laporan keuangan berbasis SAK ETAP.
IoT, Perangkat, Sekolah
Authors: Anggraini Lya Dewi , Evert Indrawan Stephanus , Herry Purwoko Gervasius
Published: May 2024

Sekolah Kristen Kalam Kudus merupakan salah satu sekolah di bawah naungan Yayasan Kalam Kudus sejak 1977 di Surabaya. Wawancara dengan Bapak Andy Ong mewakili Yayasan dan Kepala Personalia Bapak Stevanus menghasilkan beberapa informasi bahwa seluruh guru dan staf tetap masuk penuh setiap hari kerja. Sehingga permasalahan penting terkait masa pandemi Covid-19 yang diangkat adalah penerapan protokol kesehatan dengan bantuan teknologi untuk mengurangi intensitas interaksi atau sentuhan langsung dengan orang dan barang dengan menggunakan teknologi mikrokontroler yang dapat mengatur perangkat sterilisasi selama beraktivitas. Permasalahan kedua yang melekat adalah bagaimana menyebarkan informasi yang cukup dalam pemanfaatkan teknologi sederhana selama masa pandemi dan situasi serupa di masa depan. teknologi automasi berbasis Internet of things. Teknologi ini dimanfaatkan untuk mengatur perangkat sterilisasi di area bekerja para staff maupun guru sehingga dapat menunjang aktivitas mereka dalam bekerja secara lebih terprogram. Salah satu teknologi yang akan diperkenalkan adalah teknologi mikrokontoler dengan perangkat seluler sesuai jarak sosial. Unit kontrol ini dapat dipasang pada setiap kubikel atau bilik kerja sehingga setiap penggunanya selalu dalam zona aman selama bekerja. Dengan memahami prinsip dan teknologi ini, diharapkan sekolah dapat beradaptasi dengan lebih cepat di masa pandemi dengan dukungan teknologi maju era revolusi industri 4.0.
Designing molecules: directing stem cell differentiation
Authors: Thanaskody Kalaiselvaan , Natashah Fajriyah Nur , Nordin Fazlina , Kamarul Zaman Wan Safwani Wan , Tye Gee Jun
Published: May 2024

Stem cells have been widely applied in regenerative and therapeutic medicine for their unique regenerative properties. Although much research has shown their potential, it remains tricky in directing stem cell differentiation. The advancement of genetic and therapeutic technologies, however, has facilitated this issue through development of design molecules. These molecules are designed to overcome the drawbacks previously faced, such as unexpected differentiation outcomes and insufficient migration of endogenous or exogenous MSCs. Here, we introduced aptamer, bacteriophage, and biological vectors as design molecules and described their characteristics. The methods of designing/developing discussed include various Systematic Evolution of Ligands by Exponential Enrichment (SELEX) procedures, in silico approaches, and non-SELEX methods for aptamers, and genetic engineering methods such as homologous recombination, Bacteriophage Recombineering of Electroporated DNA (BRED), Bacteriophage Recombineering with Infectious Particles (BRIP), and genome rebooting for bacteriophage. For biological vectors, methods such as alternate splicing, multiple promoters, internal ribosomal entry site, CRISPR-Cas9 system and Cre recombinase mediated recombination were used to design viral vectors, while non-viral vectors like exosomes are generated through parental cell-based direct engineering. Besides that, we also discussed the pros and cons, and applications of each design molecule in directing stem cell differentiation to illustrate their great potential in stem cells research. Finally, we highlighted some safety and efficacy concerns to be considered for future studies.
Assessing the impact of sample size and geology on earthen embankment design and construction
Authors: Ulloa H. Omar , Ramirez Alex , Jafari Navid H. , Harrouch Ignacio , Barth Bradley
Published: May 2024

This technical paper investigates the influence of sample size and geologic characteristics on the geotechnical design of levee embankments. Sample quality plays a vital role in quantifying engineering properties for levee embankment projects, and numerous studies have highlighted the impact of sample disturbance on such engineering properties. Despite this evidence, conventional tube and piston samplers of different diameters continue to be widely used, potentially leading to underestimation of shear strength. The paper focuses on comparing 7.6 cm and 12.7 cm diameter undisturbed Shelby tube samples and CPT data collected from three levee sites in the Greater New Orleans Area, Louisiana, USA, which encompass diverse geologic histories. The study aims to assess the effect of industry used samples size and geology on levee construction costs. The findings provide valuable insights into optimizing sample collection methods and improving geotechnical design for earthen embankments.
The heparin-binding domain of VEGF165 directly binds to integrin αvβ3 and VEGFR2/KDR D1: a potential mechanism of negative regulation of VEGF165 signaling by αvβ3
Authors: Takada Yoko K. , Yu Jessica , Ye Xiaojin , Wu Chun-Yi , Felding Brunie H. , Fujita Masaaki , Takada Yoshikazu
Published: May 2024

VEGF-A is a key cytokine in tumor angiogenesis and a major therapeutic target for cancer. VEGF165 is the predominant isoform of VEGF-A, and it is the most potent angiogenesis stimulant. VEGFR2/KDR domains 2 and 3 (D2D3) bind to the N-terminal domain (NTD, residues 1–110) of VEGF165. Since removal of the heparin-binding domain (HBD, residues 111–165) markedly reduced the mitogenic activity of the growth factor, it has been proposed that the HBD plays a critical role in the mitogenicity of VEGF165. Here, we report that αvβ3 specifically bound to the isolated VEGF165 HBD but not to VEGF165 NTD. Based on docking simulation and mutagenesis, we identified several critical amino acid residues within the VEGF165 HBD required for αvβ3 binding, i.e., Arg123, Arg124, Lys125, Lys140, Arg145, and Arg149. We discovered that VEGF165 HBD binds to the KDR domain 1 (D1) and identified that Arg123 and Arg124 are critical for KDR D1 binding by mutagenesis, indicating that the KDR D1-binding and αvβ3-binding sites overlap in the HBD. Full-length VEGF165 mutant (R123A/R124A/K125A/K140A/R145A/R149A) defective in αvβ3 and KDR D1 binding failed to induce ERK1/2 phosphorylation, integrin β3 phosphorylation, and KDR phosphorylation and did not support proliferation of endothelial cells, although the mutation did not affect the KDR D2D3 interaction with VEGF165. Since β3-knockout mice are known to show enhanced VEGF165 signaling, we propose that the binding of KDR D1 to the VEGF165 HBD and KDR D2D3 binding to the VEGF165 NTD are critically involved in the potent mitogenicity of VEGF165. We propose that binding competition between KDR and αvβ3 to the VEGF165 HBD endows integrin αvβ3 with regulatory properties to act as a negative regulator of VEGF165 signaling.
Highly sensitive absorbance measurement using droplet microfluidics integrated with an oil extraction and long pathlength detection flow cell
Authors: Lu Bingyuan , Lunn James , Nightingale Adrian M. , Niu Xize
Published: May 2024

In droplet microfluidics, UV-Vis absorption spectroscopy along with colorimetric assays have been widely used for chemical and biochemical analysis. However, the sensitivity of the measurement can be limited by the short optical pathlength. Here we report a novel design to enhance the sensitivity by removing oil and converting the droplets into a single-phase aqueous flow, which can be measured within a U-shape channel with long optical pathlength. The flow cells were fabricated via 3D printing. The calibration results have demonstrated complete oil removal and effective optical pathlengths similar to the designed channel lengths (from 5 to 20 mm). The flow cell was further employed in a droplet microfluidic-based phosphate sensing system. The measured phosphate levels displayed excellent consistency with data obtained from traditional UV spectroscopy analysis. This flow cell design overcomes the limitations of short optical pathlengths in droplet microfluidics and has the potential to be used for in situ and continuous monitoring.
Dietary fiber may benefit chondrocyte activity maintenance
Authors: Wu Ying , Li XiangJie , Meng Hao , Wang Ying , Sheng Peng , Dong YongNing , Yang Ju , Chen BingQian , Wang XueSong
Published: May 2024

The understanding of the link between the gut-bone axis is growing yearly, but the mechanisms involved are not yet clear. Our study analyzed the role of Sestrin2 (SESN2)pathway in the gut-bone axis. We established an osteoarthritis (OA) model in Sprague-Dawley (SD) rats using the anterior cruciate ligament transection (ACLT) procedure, followed by a dietary intervention with varying levels of dietary fiber content for 8 weeks. By 16S rRNA sequencing of the gut microbiota, we found that high dietary fiber (HDF) intake could significantly increase the Bacillota-dominant gut microbiota. Meanwhile, enzyme linked immunosorbent assay (ELISA) and histological analysis showed that intervention with HDF could reduce the degree of bone and joint lesions and inflammation. We hypothesize that HDF increased the dominant flora of Bacillota, up-regulated the expression of SESN2 in knee joint, and reduced gut permeability, thereby reducing systemic inflammatory response and the degree of bone and joint lesions. Therefore, the present study confirms that changes in gut microbiota induced by increased dietary fiber intake delayed the onset of OA by promoting up-regulation of SESN2 expression at the knee joint to maintain chondrocyte activity and reduce synovial inflammation.