bluuebunny/crossref_metadata_2025 huggingface dataset:
The SYNTHESIS, SCREENING OF NOVEL 1-SUBSTITUTED-3-(4-OXO-2-PHENYLQUINAZOLIN-3(4H)-YL) UREA AND THIOUREA ANALOGUES AS POTENT ANTIBACTERIALS
Authors: DHOKALE SANDHYA R. , THAKAR SNEHAL R. , BANSODE DEEPALI A. , MAHADIK KAKASAHEB R.
Published: November 2019

Objective: The proposed study is an attempt to determine antibacterial activity of synthesized novel 1-substituted-3-(4-oxo-2-phenylquinazolin-3(4H)-yl) urea and thiourea analogues as potent antibacterials against S. aureus and E. coli bacteria.

Methods: The present study reports new series of 1-substituted-3-(4-oxo-2-phenylquinazolin-3(4H)-yl) urea and thiourea derivatives as potent antibacterial agents. Reagents used in the present study were of synthetic grade and solvents were used after distillation. Novel quinazolinone analogues were synthesized by considering substitution pattern, characterization of the synthesized analogues was performed using various techniques like Thin layer chromatography, Melting point, Infrared spectroscopy, Proton NMR spectrometry and Mass spectrometry. TLC of the synthesized analogues was carried out by using (toluene: methanol in the ratio 2:1), melting point was found by open capillary method, IR spectrum was recorded on JASCO V-530, 1H NMR was recorded on Bruker Avance Spectrometer and Mass spectra were obtained from G6460A, triple quadrupole/MS/MS system. In vitro antibacterial activity was performed against S. aureus and E. coli.

Results: Six derivatives of quinazolinone analogues were synthesized. The structures of 1-substituted-3-(4-oxo-2-phenylquinazolin-3(4H)-yl) urea and thiourea derivatives were confirmed by physical and spectral analysis. Synthesized molecules showed Rf of 0.45-0.80 in toluene: methanol mobile phase, melting point was carried out by open capillary method and were in range of 90-210 ° C, IR spectrum was recorded in range of 14000-400 cm-1and showed characteristic peaks of NH and of C-O-NH, 1H NMR of the compounds was distinct to confirm structures with delta values in the range of 7.53-11.960, Mass spectra proved parent peaks of synthesized compounds confirming molecular weight. The compounds were assayed for antibacterial activity against S. aureus and E. coli using ciprofloxacin as standard. The synthesized analogues have shown good yield and comparable antibacterial.

Conclusion: The present study delivers a convenient and efficient protocol for the quinazolinone analogues synthesis.
FRATURA DE MANDÍBULA EDÊNTULA ATRÓFICA: RELATO DE CASO
Authors: Javoski Navegantes Luiza
Published: November 2019

RESUMOA atrofia da mandíbula é mais comumente encontrada em pacientes idosos ou pacientes com perda dentária precoce, tornando tal osso mais suscetível a fraturas devido a diminuição da altura, da espessura óssea e de seu fluxo sanguíneo. O manejo de injúrias em mandíbulas nestas condições deve levar em consideração a idade e a condição sistêmica do paciente, o tempo decorrido desde o trauma e a complexidade do dano. O tratamento visa a redução e imobilização das fraturas a fim de restabelecer forma e função, incluindo técnicas abertas (cirúrgicas) e fechadas (não-cirúrgicas). Em fraturas de mandíbula atróficas, o tratamento não-cirúrgico não costuma ser uma opção viável em virtude da ausência de elementos dentários e pequena área de contato ósseo existente na região da fratura. Sendo assim, a redução aberta com fixação interna rígida tem sido o tratamento padrão associadas a sistemas de perfil pesado como as placas de reconstrução. O presente trabalho tem como objetivo relatar o caso clínico de uma paciente de 87 anos de idade, sexo feminino, leucoderma, atendida no Hospital Federal dos Servidores do Estado, apresentando fratura bilateral em corpo de mandíbula atrófica. Para o tratamento, foi realizada redução e fixação interna rígida com placas e parafusos. A paciente seguiu em controle pós-operatório durante seis meses sem a presença de complicações.Palavras-chave: Fratura mandibular; Mandíbula atrófica; Fixação interna rígida.ABSTRACTJaw atrophy is most commonly found in elderly patients or with early tooth loss, making such bone more susceptible to fractures due to decreased height, bone thickness and blood flow. The management of injuries in jaws in these conditions should take into account the age and the systemic condition of the patient, the time elapsed since the trauma and the complexity of the damage. The treatment aims to reduce and immobilize fractures to restore shape and function, including open and closed techniques. In atrophic mandible fractures, non-surgical treatment is usually not a viable option, due to the absence of dental elements and small area of bone contact in the fractured region. Thus, open reduction with rigid internal fixation has been the standard treatment associated with heavy profile systems. The present study aims to report the clinical case of an 87 years old female patient, leucoderma, attended at Hospital Federal dos Servidores do Estado, presenting bilateral fracture in atrophic jaw body. For treatment, reduction and rigid internal fixation with plates and screws were performed. The patient was followed up for six months without postoperative complications.Key words: Mandibular fracture; Atrophic jaw; Rigid internal fixation
TRATAMENTO ORTO-CIRÚRGICO DE LATERO-DESVIO MANDIBULAR: RELATO DE CASO
Authors: Magalhães de Andrade Ian
Published: November 2019

RESUMO  A assimetria facial é uma anomalia que ocorre entre partes homólogas da face, que pode gerar diversas alterações na harmonia facial e problemas funcionais, como dificuldade mastigatória. Essas alterações podem causar grandes prejuízos psicossociais ao indivíduo que possui esse tipo de anormalidade dentofacial. Dentre as opções terapêuticas, a que mais se destaca é a cirurgia ortognática pois produz resultados previsíveis e com boa estabilidade a longo prazo. O objetivo do presente trabalho é relatar o caso clínico de uma paciente portadora de látero-desvio mandibular e importante assimetria facial, apresentando o resultado alcançado com a cirurgia ortognática bimaxilar e discutir a literatura especializada. Palavras-chave: Cirurgia ortognática; Látero-desvio mandibular; Ortodontia.   ABSTRACT  Facial asymmetry is an abnormality that occurs between homologous parts of the face, which can generate several changes in facial harmony and functional problems, as masticatory difficulty. These changes can cause great psychosocial damage to the individual who has this type of dentofacial abnormality. Among the therapeutic options, the most common is orthognathic surgery, because produces predictable results with good long-term stability. The aim of the present study is to report the clinical case of a patient with mandibular lateral deviation and an important facial asymmetry, presenting the result achieved with bimaxillary orthognathic surgery and discuss the specialized literature. Key words: Ortognatic surgery; Mandibular lateral deviation; Orthodontics
REABILITAÇÃO TOTAL IMEDIATA MAXILO-MANDIBULAR COM PRÓTESE FIXA SOBRE IMPLANTES COM CONCEITO ALL-ON-FOUR: RELATO DE CASO
Authors: Martins da Silva Frederico
Published: November 2019

RESUMOCaracterizada por ser uma das mais documentadas formas de reabilitação de dentição completa sobre implantes, a reabilitação com próteses tipo protocolo híbrida, compreende uma infraestrutura metálica associada a uma sobrestrutura em resina, tendo atualmente cerca de 40 anos de acompanhamento da efetividade da técnica. Com o aumento da expectativa de vida das populações, espera-se o aumento da prevalênia do edentulismo completo. Esse aumento gera uma maior necessidade desse tipo de tratamento restaurador e uma consequente melhora da forma de alcançar esse objetivo.  O trabalho em questão, busca relatar um caso de cirurgia e função imediata, maxilo-mandibular, incluindo o planejamento clínico, fotográfico e radiográfico. Foi feita a cirurgia de instalação de 8 implantes, sendo 4 do tipo hexágono externo(HE) no arco superior e 4 hexágono interno(HI) inferior. Foram utilizadas angulações distais nos implantes mais posteriores de ambos arcos, compensados com minipilares angulados, diminuindo o cant-lever sobre a porção posterior das próteses. Processeguiu-se à moldagem com guia multifuncional durante o trans-operatório, e a carga foi feita sobre a prótese provisória com 7 dias de cicatrização, utilizando cilindros provisórios para mini-pilar. O tratamento foi considerado um sucesso, por parte dos profissionais e da paciente, imediatamente, prosseguindo para a etapa de confeccção da prótese definitiva após 6 meses de osseo-integração e função dos implantes.
ODONTOMA COMPOSTO COMPLEXO EM MAXILA: RELATO DE CASO
Authors: Britto de Melo Silva Fernanda
Published: November 2019

RESUMO Segundo a Organização Mundial de Saúde os odontomas são tumores odontogênicos originados do epitélio e do ectomesênquima odontogênico. São subdivididos em tipo complexo e composto, sendo este último apresentando uma maior prevalência. Frequentemente, os odontomas são detectados durante as primeiras duas décadas de vida, sendo a idade média no momento do diagnóstico de 14 anos. Em sua maioria é completamente assintomática, sendo descoberta durante o exame radiográfico de rotina ou por retardo na erupção de dentes próximo ao odontoma. Ao exame radiográfico, apresentam geralmente áreas radiopacas com semelhança dentária. O método terapêutico indicado para o tratamento é a enucleação da lesão, apresentando um excelente prognóstico. Este trabalho tem como objetivo relatar o caso clínico do paciente N.Y.R.,13 anos de idade, sexo masculino, melanoderma, atendido na clínica de Diagnóstico Bucal da Universidade Federal Fluminense apresentando odontoma localizado na região anterior de maxila, ocasionando a retenção dos dentes permanentes 22 e 23. O procedimento foi realizado sob anestesia local em ambiente ambulatorial, sem intercorrências cirúrgicas. O mesmo segue em controle a cerca de doze meses para acompanhamento da erupção dos dentes pela clínica de Ortodontia.Palavras-chave: Odontoma; Maxila; Tratamento.             ABSTRACT Odontomas are odontogenic tumors originating from the epithelium and odontogenic ectomesenchyma, considered as developmental anomalies (hamartoma), instead of true neoplasms. They are subdivided into complex and compound types, the latter being more prevalent. Often, odontomas are detected during the first two decades of life, with the mean age at the time of diagnosis being 14 years. It is mostly asymptomatic, being discovered during the routine radiographic examination or when x-rays are taken to determine why a tooth has not yet erupted. At radiographic examination, they appear as a radiopaque mass surrounded by a radiolucent halo. The therapeutic method indicated for the treatment is the enucleation of the lesion, presenting an excellent prognosis. This study aims to report the clinical case of the NYR, 13 years old male patient, melanoderma, attended at the Oral Diagnosis Clinic of the Fluminense Federal University presenting odontoma located in the anterior region of the maxilla, causing the retention of the permanent teeth 22 and 23. The procedure was performed under local anesthesia in an outpatient setting, without surgical complications. The patient is in control about twelve months to follow the eruption of teeth by the Orthodontics clinic.Key words: Odontoma; Maxilla; Therapy.
PENERAPAN PENDEKATAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA KELAS VII MTs PADA MATERI PERBANDINGAN DAN SKALA
Authors: Marlina Ratna , Nurjahidah Sifa , Sugandi Asep Ikin , Setiawan Wahyu
Published: November 2019

This research aims to get results description of application of problem based learning approach in an effort to enhance student learning outcomes as well as knowing the increase in mathematical problem solving ability grade VII MTs on comparison of material and scale. The methods used in this research in the research conducted through two cycles of activity, and each cycles as much as 2 meeting. The subjek of this research is the teacher and all students of classes VII-B of 30 people. The object of this research are mathematical problem solving ability of students and the analysis undertaken aiming to find out the types of difficulties, hardships, cause factors and how the students in difficulty against handling problem solving math.
PENGARUH PENDEKATAN REALISTIK TERHADAP KEMAMPUAN KOMUNIKASI DAN SELF CONFIDENCE SISWA SMP
Authors: Martini Susi , Padilah Dila , Rosyana Tina , Rohaeti Euis Eti
Published: November 2019

menelaah mengenai peningkatan belajar siswa sebelum dan sesudah di berikan pembelajaran dengan menggunakan pendekatan realistik
ANALISIS PENGARUH DISPOSISI MATEMATIS TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA SMP
Authors: Sarifah Fauziah Siti Dewi , Nuraidah Siti , Riajanto Marchasan Lexbin Elvi Judah , Maya Rippi
Published: November 2019

Penelitian ini bertujuan untuk menganalisis seberapa besar pengaruh disposisi matematis terhadap kemampuan pemecahan masalah matematis siswa SMP dengan menggunakan metode korelasional dan pendekatan kuantitatif. Populasi dalam penelitian ini adalah satu SMP di Kota Bandung. Pemilihan sampel dilakukan dengan teknik purposive sampling sebanyak 35 siswa. Instrumen yang digunakan dalam penelitian ini berupa tes kemampuan pemecahan masalah matematis  sebanyak 4 butir soal dan skala disposisi matematis sebanyak 30 skala pernyataan. Secara keseluruhan kesimpulan dari penelitian ini adalah disposisi matematis siswa secara positif memengaruhi kemampuan pemecahan masalah sebesar 70,4%, dan faktor lain memengaruhi kemampuan pemecahan masalah sebesar 29,6%.
ANALISIS KEMAMPUAN BERPIKIR KRITIS MATEMATIK SISWA SMP DI KOTA CIMAHI PADA MATERI SEGIEMPAT DAN SEGITIGA
Authors: Andriani Dewi , Nurjaman Adi
Published: November 2019

Critical thinking ability is a process to leads to withdrawal conclusion about what do you believed and action will do. The importance of critical thinking ability on education and that is the main purpose of instructional, there are four importance component  for build that ability that is (a) explain and clarify; (b) asking the correct question to clarify or challenge; (c) consider the source of credibility; (d) problem solving and illustrates the conclusion. Method of the research will use is qualitative descriptive. As for the sample in this research is ninth of grade students on Cimahi city from high ability, medium and low. For the instrument test of critical thinking ability will deliver to students are five questions and following with interview for each student. Then, the results obtained was the level of critical thinking ability mathematics students in Cimahi city. Based on the writing test and the results of the interview with the low-level students.
KEMAMPUAN REPRESENTASI MATEMATIK SISWA KELAS IX MTS PADA MATERI BANGUN RUANG SISI LENGKUNG DENGAN PENERAPAN PENDEKATAN RECIPROCAL TEACHING
Authors: Moka Santriwati , Hendriana Heris , Afrilianto M
Published: November 2019

The purpose of this study is to analyze the influence of  implementing reciprocal teaching approach as an attempt to improve students’ mathematical representation in class IX-B MTs Al-Musyahadah Cimahi on the curved-face three-dimensional-object. The type of research, which applied, is classroom action research. The classroom action research consists of 2 (two) cycles based on teaching syllabus of the mathematics teacher in class IX-B. Each cycle was conducted based on the learning objectives. The cycle in this study involved the following procedures: (1) Planning; (2) Implementation of action; (3) Observation and evaluation; (4) Reflection. Based on the result of research conducted on the students of class IX-B MTs Al-Musyahadah on the curved-face three-dimensional-object  material, it revealed the fact that the use of reciprocal teaching approach can improve the ability of mathematical representation, which are;  (1) responses and learning outcomes shown in cycle II are primly good, and (2) the students’ score of mathematical representation test capability in each cycle has improve significantly, until 87% on the last cycle . Moreover, the results showed that there are only 4 students from total 29 students who obtain score below 65. Therefore, Learning by applying reciprocal teaching approach is very effective to use in learning process.
PERKEMBANGAN SISWA SMK KELAS X DALAM PEMBELAJARAN OPERASI BILANGAN
Authors: Angraini Padhila , Prahmana Rully Charitas Indra , Ardhian Ardhi
Published: November 2019

This study aims to determine about the development of students. This research method used is Single Subject Research (SSR) with basic design of A-B. The techniques of data collection used observation and interview to determine difficulties and the ability understanding mathematical students. The results of this study indicate that kontruktivisme approach can improve understanding mathematical students. It can be seen from the average score obtained by the student before the treatment given that is 11,75 and increased to 77,88 after treatment.
MENINGKATKAN KEMAMPUAN KOMUNIKASI MATEMATIK SISWA KELAS VIII SMP NEGERI 2 CARIU PADA MATERI SISTEM PERSAMAAN LINIER DUA VARIABEL DENGAN PENDEKATAN REALISTIC MATHEMATIC EDUCATION (RME)
Authors: Syamsudin Nurlia , Afrilianto M , Rohaeti Euis Eti
Published: November 2019

The purpose of this researchis to improve mathematical communication ability of the students in class VIII A in two variabels equation system by using Realistic Mathematic Education (RME) approach at SMPN 2 Cariu. The type of this research is Classroom Action Research (CAR) by using spiral research model from Kemmis and McTaggart with the sample of this research is all students of class VIII A SMPN 2 Cariu. This research consists of two cycles where each cycle consists of planning, implementation, observation and replection, which is before and after this research is given the instruments in the essay from in each cycle, there is an observation sheet of the teacher and students activity during in the learning progress. The result of this research is to indicate the students mathematical communication aibility can be improve through the application of the Realistic Mathematic Education (RME) approach.
ANALISIS KEMAMPUAN BERPIKIR KRITIS MATEMATIS BERDASARKAN MOTIVASI BELAJAR MATEMATIS SISWA SMP
Authors: Yunita Neneng , Rosyana Tina , Hendriana Heris
Published: November 2019

This study aims to determine the ability to think critically mathematically based on the motivation of junior high school students. The method in this research using correlational method with quantitative approach. The population in this study is in one of the junior high schools in western Bandung and the number of samples as many as 29 students with heterogeneous ability. Intrumen in this research is in the form of test of critical thinking ability capability with number of seven item and non test in the form of learning motivation scale which consist of 25 scale statement. The results of this study obtained that the ability to think critically mathematically based on learning motivation has a positive effect of 16.2%. While 83.8% influenced in addition to student learning motivation.
PENGARUH PEMBELAJARAN BERBASIS MASALAH TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA SMA
Authors: Al Ayyubi Ibnu Imam , Nudin Erwan , Bernard Martin
Published: November 2019

This research is motivated by the low ability of mathematical problem solving of high school students who need a learning approach to overcome the problem. Alternative approach used is problem-based learning approach. This study aims to examine whether the problem-solving ability of mathematical students using problem-based learning is better than using ordinary learning. The research method used is experimental method. At the end of the learning the two classes were given a test. The population in this study were high school students in SMAN 2 Cimalaka class XI, while the sample consisted of two classes chosen at random. The data collection in this research is a test of five questions, then the scores of mathematical problem solving abilities are analyzed by descriptive statistics and inferential statistic using two difference test average. Based on the results of research, both from data analysis and hypothesis testing, the authors conclude that the problem solving ability of mathematical students using problem-based learning is better than using ordinary learning.
ANALISIS KEMAMPUAN BERPIKIR KREATIF MATEMATIS SISWA SMA KELAS XI PADA MATERI TRIGONOMETRI DI TINJAU DARI SELF CONFIDENCE
Authors: Trisnawati Iis , Pratiwi Wulan , Nurfauziah Puji , Maya Rippi
Published: November 2019

The purpose of this study is to analyze mathematic creatively thinking and analyze students' difficulties in solving the problem of mathematical creative thinking on Trigonometric material in review of self confidence. The subjects of this study were students of class XI MAN Kota Cimahi that consists of 27 students. The method used in this research is descriptive method with qualitative approach. The stage of this research consists of  five stages, including: filling self confidence, tests of mathematical creative thinking ability, interviews, analysze and take a conclusions. The results of the research showed that, when that self confidence affect the improvement of mathematical creative thinking in students. The higher self confidence in the students, the curiosity of students will be encouraged and will increase the ability of creative thinking mathematics. Otherwise, if the self confidence in students is lower, than the student's curiosity is less encouraged and this will have an impact to increase the ability to think creative mathematics.
PENGARUH METODE INKUIRI TERBIMBING TERHADAP KEMAMPUAN PENALARAN DAN SELF CONFIDENCE SISWA SMP
Authors: Nuryanti Neti , Rosyana Tina , Rohaeti Euis Eti
Published: November 2019

This study aims to examine the achievement of mathematical reasoning ability and self confidence of MTs students using guided inquiry method compared with using ordinary learning. The method used in this study is a quasi-experimental method, with a pretest and postes experimental-control group design. The population in this study is all MTs students in West Bandung regency, while the sample of the research is as much as two classes are selected to be experimental class and control class. The experimental class gained learning by guided inquiry method and the control class gained regular learning. The instrument used is a matter of reasoning ability test and non test self confidence matter. Data of research result are tested and analyzed quantitatively by using statistical test (t test). The conclusions obtained are as follows: 1) students' mathematical reasoning ability that obtains learning with guided inquiry method is better than students who gain ordinary learning; 2) the ability of self confidence students who gain learning with guided inquiry method is better than students who get regular learning.
ANALISIS KEMAMPUAN HIGH ORDER THINKING (HOT) SISWA SMP NEGERI DI KOTA CIMAHI
Authors: Hajar Yuni , Yanwar Ridwan , Jalaludin Muhamad Agus , Achmad Naskia , Indriani Gita Safira , Hidayat Wahyu , Rohaeti Euis Eti
Published: November 2019

high order thinking skill is an important skill that student must have, especially in mathematics education. In the process of solving problems, students are required to be able to think fundamental and creative. The purpose of this research is to analyze the comparison of high order thinking ability of students in SMPN Cimahi based on school classification. The research method used is experimental with the design of two class and post-test only. the sample taken in this research is the students of class VII SMPN in Cimahi with high classification and moderate classification. The result of this research is there's still a very significant difference in high order thinking the skill of junior high school student in Cimahi city. SMPN with high classification has good high order thinking skills than SMPN with moderate classification. This is due to the following factors, (a) the students have different bits of intelligence; (b) the way students face difficulties (problems) that varies depending on how the students' everyday learning process; (c) the classification of schools have an effect on student’s high order thinking skill.
PENINGKATAN KEMAMPUAN PEMECAHAN MASALAH MELALUI PEMBELAJARAN BERBASIS MASALAH SISWA SMP
Authors: Resilona Sutiana Ferica , Hidayat Wahyu , Hendriana Heris
Published: November 2019

This research is motivated by the results of previous research which shows that students' mathematical problem-solving ability is not as expected. One of the learning to improve the problem-solving ability of mathematics is problem-based learning. The purpose of this study is to determine the improvement of students' mathematical problem-solving skills as a result of problem-based learning. This study is a quasi-experiment that implements two lessons: problem-based learning and conventional learning. Population in this research is a student of the junior high school in Regency of West Bandung. Sampling was done by purposive sampling and obtained two classes as research sample. The research instrument used is the test of mathematical problem-solving ability. Based on the results of the analysis, it can be concluded that the improvement of the problem-solving ability of mathematical students who get problem-based learning is better than the students who get conventional learning.
IDENTIFIKASI KESALAHAN SISWA SMP DALAM MENYELESAIKAN SOAL KEMAMPUAN PENALARAN MATEMATIK PADA MATERI BANGUN RUANG SISI DATAR DENGAN ANALISIS KESALAHAN NEWMAN
Authors: Lestari Atika Sri , Aripin Usman , Hendriana Heris
Published: November 2019

The Reasoning is the process of thinking to take a conclusion based on observations. The reasoning is very useful for dealing with problems in daily life. Once the importance of reasoning in life, so that the reasoning ability continues to be developed, one of them through the academic field. Because of the importance of reasoning ability for students, it is necessary to analyze what errors are done by students in solving the problem of reasoning ability. So that in the future the students' mathematical reasoning ability can be better. The type of research is descriptive qualitative research. This research was conducted in SMP Negeri 1 Margaasih with 15 students. The data collected is in the form of test and interview data, then data will be processed by Newman error analysis theory. The result of the research shows that the students' make a mistake because the students' lack of understanding on the concept, the lack of students' knowledge in reading, understanding and answering questions, and the students are not accustomed to working on the problem of mathematical reasoning ability. The most common type of Newman error in solving the problem of mathematical reasoning is errors in notation writing, and the error-prone reasoning indicator is an indicator to check the validity of an argument.
PENGARUH KEMAMPUAN KOMUNIKASI DAN DISPOSISI MATEMATIS SISWA SMP
Authors: Putri Mega Sugondo , Hidayat Wahyu , Maya Rippi
Published: November 2019

This study aims to analyze in depth the influence of mathematical disposition on mathematical communication ability of junior high school students. The method in this research using a correlational method with quantitative approach. The population of this study is all junior high school students in one of the SMP Negeri in West Bandung amounted to 34 students. Instruments in this study using the test of mathematical communication skills as much as 5 items and the scale of mathematical disposition as much as 23 points of statement scale. The result of this research is student's mathematical disposition influenced by 76,5% then its rest influenced by other factors outside mathematical disposition equal to 23,5%.
MENINGKATKAN KEMAMPUAN KOMUNIKASI MATEMATIK SISWA SMP DENGAN PENDEKATAN CONTEXTUAL TEACHING AND LEARNING (CTL)
Authors: Safitri Juliana , Zanthy Luvy Sylviana , Hendriana Heris
Published: November 2019

This research did from the low ability phenomena of mathematical communication of SMP in Purwakarta. The low skill ability of mathematical communication can be seen from the lack of students in completing the test of mathematical communication form to provided in the first research, the purpose of this research was to examined the improvement of CTL (Contextual Teaching and Learning) skill with traditional learning and the methodology of this research using quasi-experimental method which consist of two classes. The first is experiment class treated using CTL and the second is control class treated traditional learning. The population of the research taken was students of SMP Negeri 1 Babakan Cikao and a randomly selected sample of consist of 30 students of class VII A as the experiment. Class and 30 students of class VII D as control class. The instrument of this research used 6 items about mathematical communication description form, that has been tested the validity, reliability and distinguish of power form indexed difficulty. Based on the result of data analysis have concluded that the improvement of mathematical communication ability in SMP Negeri 1 Babakan Cikao by using CTL approach is better than traditional learning.
KEMAMPUAN KOMUNIKASI MATEMATIK SISWA SMP KELAS IX PADA MATERI BANGUN RUANG SISI DATAR DI KABUPATEN BANDUNG
Authors: Noviana Fitria , Mulqiyono Sigit , Afrilianto Muhammad
Published: November 2019

Students mastery of mathematical communication ability can be one of benchmark to know the level of students understanding about the material that has been submitted. Mathematics is not only a tool for thinking but also math can be a tool to communicate an idea. This research aim is to describe the mathematical communication ability of class IX SMP. The research takes place in one of SMP in Bandung Regency. The mathematics material that discussed is about polyhedron. Data were taken from the results of the test instrument about the ability of mathematics communication. The samples that researcher used are about 30 students of class IX SMP. The results of this research showed the percentage of students' mathematics communication ability at 31% that means most of the students have a low percentage of understanding mathematics communication.
ANALISIS KEMAMPUAN KOMUNIKASI MATEMATIK SISWA KELAS VIII PADA MATERI BANGUN DATAR SEGITIGA DAN SEGI EMPAT
Authors: Mulqiyono Sigit , Yuniar Debby , Anita Ika Wahyu
Published: November 2019

This preliminary study aims to analyze the mastery of mathematical communication skills of class VIII students in junior high school in Bandung regency of triangular and rectangular flat building material. In this preliminary study, the research method used is a qualitative descriptive method with 5 students of class VIII as a sample and research instruments used are 5 items about the instrument of mathematical communication ability. Based on the observations made on 5 students it is found that mastery of mathematical communication skills owned by grade VIII students in one junior high school in Bandung Regency is still relatively low.
KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA SMA DITINJAU DARI GENDER
Authors: Pebianto Acep , Suhartina Reyna , Yohana Ribka , Mustaqimah Indri A , Hidayat Wahyu
Published: November 2019

This research aims to analyze and examine comparison of critical thinking mathematical ability high school students viewed of gender.. The method in this research is a method of experimentation with the design of the two classes and post-test only. The sample of this research is the grade XI at one high school in the city of Cimahi.. The subject consists of 29 students are male and 43 female students. Research instrument in the form of a test of the ability of critical thinking as much as 4 grains of reserved descriptions and interviews. The analysis of the data used in this research in the form of test t. Research results it gives the conclusion that there was no difference in the ability of critical thinking mathematically high school students  viewed of gender
PENGARUH SELF CONFIDENCE SISWA SMP TERHADAP KEMAMPUAN BERPIKIR KREATIF MATEMATIS SISWA
Authors: Pratiwi Indiraningrum , Yulianti Dwi , Malinda Pamila , Pitriyani Pipit , Hajar Mira Siti , Hidayat Wahyu
Published: November 2019

This research aims to know the influence of student’s self-confidence against the ability of mathematical creative thinking of students. Methods used correlational with quantitative approach. Samples taken is as much as 30 students are subjected to an SMP in the city of Cimahi. The instruments used in this research consists of a test and non-test. The results of this research are the self-confidence of students have a positive effect on the ability of mathematical creative thinking of the students of 10.9% and 89.1% influenced by factors other than the self-confidence.
ANALISIS KEMAMPUAN PEMAHAMAN MATEMATIK SISWA SMP KELAS VII PADA MATERI BANGUN DATAR
Authors: Tantowi Asep , Rohaeti Euis Eti , Afrilianto M
Published: November 2019

This study aims to determine the level of ability of mathematical understanding of junior high school students VII in Karawang on the matter of building flat. The type of research used is a qualitative descriptive research. Sempel in this research is students of SMP Negeri 1 Batujaya. The data collected in the form of written test results as much as 5 items that refer to the ability of students' mathematical understanding. Most students can not understand what the problem wants. Based on the results of research students average percentage of results from the test description is only reached 58%. Judging from the test results can be said that students' mathematical understanding ability is still low.
ANALISIS KEMAMPUAN PEMAHAMAN MATEMATIK SISWA PADA MATERI SEGIEMPAT
Authors: Atikah Aat , Rohaeti Euis Eti , Afrilianto M
Published: November 2019

This study aims to determine the ability of mathematical understanding of class VII students on the material wake flat. The type of research used is a qualitative descriptive research. The subjects of this study consisted of 5 students selected at random. The data collected in the form of written test results as much as 5 points about the ability of students' mathematical understanding. The test results were analyzed according to the students' mathematical comprehension indicator. Data analysis is done to analyze the extent of students' mathematical understanding ability. Based on the result of research that students mathematical understanding ability still not enough in each indicator. From this research can be concluded that students mathematical understanding ability in VII grade in finished the matter of getting up flat is still low
ANALISIS KESULITAN SISWA SMP DALAM MEMAHAMI KONSEP KUBUS BALOK
Authors: Maryanih Maryanih , Rohaeti Euis Eti , Afrilianto M
Published: November 2019

The descriptive research aims to diagnose the difficulties of secondary school students in understanding Cube and Rectangular Prism. Geometry test and interview are used as the instrument. The subjects are 3 seventh grade students who respectively represent high, medium and low ability in mathematics. This research finds that the students have difficulties in understanding the properties of a cube and rectangular prism, inventing the surface area, and using the formula to determine the surface area. The difficulty in using the formula to solve related problems is an effect of memorizing ready-made formula without understanding so the students are easy to forget it. The alternative ways to cope with the difficulties are: (a) Using computer application (PowerPoint, Ms. Word with SmartArt Graphic) and other current software like Cabri Geometry, The Geometer’s Sketchpad (GSP), Geometry Expert, Logo, Geogebra, and Wingeom; (b) Activating students’ prior knowledge about plane which explains the side of the solid figures; (c) Implementing guided discovery learning with students’ worksheet; and (d) giving variation exercises involving contextual or non-contextual problems.
ANALISIS KEMAMPUAN PENALARAN MATEMATIS SISWA SMP PADA MATERI SEGITIGA DAN SEGIEMPAT
Authors: Safitri Anggie Munthia , Rohaeti Euis Eti , Afrilianto M
Published: November 2019

The aim of this research is to know the difficulties of reasoning ability include: (1) ability to give explanation related to Triangle and Segiempat using model, fact, nature, and relationship, (2) student ability to estimate answer and solution process of question given, (3) ) the ability of students to use patterns and relationships to analyze problems in Triangle and Quadrilateral, (4) ability to draw conclusions from every problem that exist both orally and in writing. The method used in this study by using qualitative methods. Population taken in this research is a student of SMP Negeri 1 Ngamprah class VII. Based on the research result, the average score of students' mathematical reasoning ability on triangle and quadrilateral material is 47%. Students who are able to determine the area and circumference of the flat wake tested in the solution of mathematical reasoning is 35%. While the number of students who are able to calculate the pattern n as much as 20%. Based on the data, it is concluded that there are students 'reasoning difficulties and students' mathematical reasoning ability at SMPN 1 Ngamprah is still low.
ANALISIS KEMAMPUAN BERPIKIR KRITIS MATEMATIS (BKM) SISWA SMP PADA MATERI SEGIEMPAT DAN SEGITIGA
Authors: Khulsum Regiana , Suryaningsih Yani , Riajanto Marchasan L. E. J.
Published: November 2019

This research is motivated by the importance of mathematic critical thinking ability for students and the low ability of students matematics critical thinking. The population in this study were all students of SMPN 2 Cimahi class VII, while the sample was students of class VII-7. Then through observation and interview determined 6 students as research subjects. The method used in this study is analytic descriptive. The research instrument is 5 essay questions that represent indicators of mathematic critical thinking ability. The results showed that the average achievement of students in each indicator was less than 50%, which means it can be concluded that students' critical thinking skills are still relatively low.
HUBUNGAN SELF CONFIDENCE TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA SMP
Authors: Fauziah Rima , Maya Rippi , Fitrianna Aflich Yusnita
Published: November 2019

This research was conducted to analyze the relationship between self confidence with the ability of mathematical problem solving of IX grade junior high school students. Research method is correlation analysis. The subject of this study consisted of 35 students of student in grade IX junior high school in Cimahi. Sampling technique using random technique. The test were done by giving about problem solving skills in the form of essay 5 items and self confidence questionnaire with Likert scale. The data analysis steps used were normality, correlation test, determine the coefficient of determination or coefficient determinant to see contribution or influence of variable self confidence to variable the ability of mathematical problem solving and continued with significance test (t test). Based on the result of research, it can be conclude that there is a significant relationship between self confidence in the ability of solving mathematical problems of junior high school students.Keywords: the ability of mathematical problem solving, self confidence, junior high school students.
PENDEKATAN REALISTIC MATHEMATICS EDUCATION UNTUK MENINGKATKAN KEMAMPUAN KOMUNIKASI MATEMATIS SISWA
Authors: Jasija Kiki , Fitriana Fista Anaba , Aripin Usman
Published: November 2019

The purpose of this study is no other to know the extent to which the RME approach can improve the mathematical communication skills of students MTS Negeri 2 Purwakarta. The method used is quasi experiment with pretest-posttest nonequivalent control group design. The 5th grade students of MTsN 2 Purwakarta, which were 5 classes, were used as the population for this study while the research samples were class VIIA as the experimental class and VIIE as the control class. Determination of the sample is taken by the researcher accepting the state of the subject as it is after being grouped not randomly purely to be subjected to the treatment of mathematics learning through Realistic Mathematics Education approach and conventional approach. Instrument of research in the form of test instrument of mathematical communication ability. The results show that the improvement of students' mathematical communication ability using RME approach is better than using the usual approach.b
PENERAPAN PENDEKATAN MATEMATIKA REALISTIK TERHADAP KEMAMPUAN PEMECAHAN MASALAH
Authors: Dewi Hafsah Puspita , Fitri Elsa , Minarti Eva Dwi
Published: November 2019

This study aims to know the achievement of the ability of the solution of the problems a useful or valuable junior high school students who used the realistic mathematics conventional by learning, the experimental work on this , matter used arithmetic is social class VII junior high school semester the even. Methods used is quantitative, who is in the form of experiments in supported by data from pretes and postes.The population research is junior high school students class VII in west bandung.With 43 sample graders experiment and 40 graders controls on the academic year 2017 / 2018. An instrument that is used is math tests the ability of the solution of the problems .Processing the data were analyzed using ibm spss version 21 application statistics . Processing data using analysis test normality and has been continued by test the average namely mann-whitney test .Based on the analysis conducted , results showed that the achievement of the ability of the solution of the problems a useful or valuable junior high school students who used the mathematics realistic better than conventional learning .
MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIK SISWA MTS DENGAN MENGGUNAKAN PROBLEM POSING
Authors: Nursyifaa Elza Efriyani , Senjayawati Eka
Published: November 2019

The purpose of this research is to assess whether the improvement of students' mathematical problem solving skills using Problem Posing approach is better than those using ordinary learning. The population in this research is MTs Nurul Falah Cimahi. This research instrument in the form of a test of mathematical problem solving skills of five items. This research data is processed using software SPSS Version 22. Data analysis used is test of normality and test of two difference of mean. The result of this research stated that the achievement and improvement of problem solving skills of MTs students using Problem Posing approach is better than the normal learning, and the implementation using Problem Posing approach has been run in accordance with the learning procedure found and the difficulties experienced by students in solving the problem of solving skills mathematical problems are present in indicators of understanding problems, planning problems, implementing problem-solving plans, and re-examination.
HUBUNGAN ANTARA KEMAMPUAN PEMAHAMAN MATEMATIK DENGAN KEMANDIRIAN BELAJAR SISWA SMP YANG MENGGUNAKAN PENDEKATAN KONTEKSTUAL
Authors: Mulianty Hana Rizkia , Hanifah Agfie Nurani , Sugandi Asep Ikin
Published: November 2019

The purpose of this study is to examine how the relationship between the ability of mathematical understanding with the independence of student learning in learning using a contextual approach. The method in this research is quasi-experimental method, with two different classes taken, where the first class get learning with contextual approach and second class using ordinary learning. The population is all students in one of the cities cimahi with samples taken two classes. Both classes were given pretest and early questionnaires to determine their initial ability, then in the experimental class were given learning with contextual approach and control class were given regular learning, and at the end of both classes were given postes and also final questionnaire, which the data at the end will be in though and in the correlation analysis using Product Moment Pearson. The results showed a significant relationship between the ability of mathematical understanding and student learning independence in learning mathematics..
ANALISIS HUBUNGAN KEMAMPUAN KOMUNIKASI MATEMATIS DAN MINAT BELAJAR SISWA SMP DENGAN MENGGUNAKAN PENDEKATAN REALISTIC MATHEMATIC EDUCATION
Authors: Armania Marzan , Eftafiyana Siti , Sugandi Asep Ikin
Published: November 2019

Abstract  This study aimed to analyze the correlation between Mathematical Communication skill and learning interest of Junior High School students by using The Realistic Mathematic Education (RME) approach. The method used in study is using the Quasi-experimental method, by picking up two different (2) classes occupied by Junior High Students in Bandung Residence, and there will be two (2) classestaken as the sample of this study. the first class (experimental)use the Realistic Mathematics Education (RME) Approach, while the second class (Control) use the usual learning. The questionnaire answer then transformed by using the Method of Successive Interval (MSI), and the data will be tested by using the Product Moment Pearson and Spearmant Theory. The result of this study may point that there is a significant correlation between Mathematical Communication Skill and The Learner's Interest in Studying Mathematics. Keywords: Mathematical Communication, Learning Interests, Realistic Mathematic Education Approach.
HUBUNGAN KEMAMPUAN KOMUNIKASI MATEMATIK SISWA SMP DI KABUPATEN BANDUNG BARAT MENGENAI MATERI PERSAMAAN DAN PERTIDAKSAMAAN LINEAR SATU VARIABEL
Authors: AWALUHUM LIA , Sariningsih Ratna
Published: November 2019

This study aims to describe the mathematical communication skills of seventh grade students of West Bandung District Junior High School in understanding linear equations and one variable inequality. This type of research is qualitative research. Research subjects were selected based on even semester semester math report cards. Research subjects used in this study were 3 students selected from 15 students, namely one high-ability student, one moderate-capable student and one low-ability student. The results of this study were (1) Subjects with high ability in understanding Equation and the inequality of one variable reaches three indicators of mathematical communication ability that is to state mathematical problems related to Linear Inequality and Inequality One variable in the form of a story problem. stating the problem given in the form of mathematical models in the form of equations and solving them and stating a story problem into an idea or problem related to Equality and Inequality of one variable and can solve the problem, (2) Subjects with moderate ability to understand Equations and Inequality One variable reaches two indicators of mathematical communication ability, namely expressing mathematical problems related to equations and inequality of one variable in the form of story problems and expressing an image into an idea or mathematical problem related to linear equations and inequalities of one variable and the problem can be solved. And (3) Subjects with low ability in understanding Equations and inequality of one variable reach an indicator of mathematical communication ability which states mathematical problems related to linear equations and inequalities of one variable.