Pengembangan bahan ajar materi garis singgung lingkaran menggunakan model problem based learning berbantuan scratch

This research aims to develop teaching materials that are suitable and practical for use in learning. The teaching materials developed are Student Worksheets (LKPD) using the Problem Based Learning (PBL) model assisted by Scratch. The development research model used is the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). Conducted in one of the state junior high schools in Bandung City with 44 class VIII students who were divided into control classes and experimental classes. The research instruments used were LKPD validation questionnaires by experts, and student response questionnaires. The material used in the research was circle tangent material, the research results were processed using Microsoft Excel 2010. The research obtained results that the development of teaching materials on circle tangent material using the Scratch-assisted PBL model in terms of validity and practicality was in the good category. The validation results from material experts were 96.8%, validation from media experts was 95.2%, and validation by practitioner experts was 96%.. The results of the student response questionnaire were 77.16% in the practical category

Kemampuan berpikir kreatif matematis siswa SMA pada materi statistika

The purpose of this study was to analyze students' mathematical creative thinking skills. Indicators of mathematical creative thinking ability are fluency, flexibility, authenticity and detail in statistical material. The subjects of the study were 30 class XII students in one of the West Bandung Regency High Schools. The research method uses descriptive qualitative to describe students' creative thinking process through classroom learning. The research instrument consists of a description test of 4 questions and a questionnaire of 10 questions. Processing test and questionnaire data using Microsoft Excel 2019. Based on the results of the study, it was obtained that students' mathematical creative thinking skills were in the medium category. In the smoothness indicator, a percentage of 85% was obtained, while the flexibility indicator obtained a percentage of 80%, then for the Authenticity indicator 78% and the 4th indicator Keterinci got a percentage of 68%

PENGEMBANGAN INSTRUMEN UNTUK MENINGKATKAN KEMAMPUAN MATHEMATICAL PROBLEM POSING SISWA SMA

Penelitian pengembangan ini menghasilkan produk berupa instrumen pembelajaran dengan pendekatan scientific disertai strategi what if not dan tes kemampuan mathematical problem posing. Metode penelitian ini terdiri dari: pendahuluan (studi pustaka, observasi, dan wawancara), pengembangan instrumen, penilaian tim ahli, uji coba terbatas pada 10 siswa kelas XII, dan uji coba pada siswa kelas XI di SMA Negeri 2, 3, dan 4 Cimahi dengan peringkat tinggi, sedang, dan rendah. Instrumen pembelajaran yang dikembangkan terdiri dari silabus, Rencana Pelaksanaan Pembelajaran (RPP), dan tes uraian. Silabus mengenai materi aturan pencacahan. RPP disusun sesuai dengan pendekatan scientific disertai strategi what if not. Tes disusun sesuai dengan indikator kemampuan Mathematical Problem Posing (MPP). Pada uji coba terbatas terhadap 10 siswa yang telah mempelajari materi aturan pencacahan disimpulkan bahwa instrumen sudah valid untuk mengukur kemampuan MPP. Sebelum dan setelah mendapatkan pembelajaran, siswa mengalami peningkatan kemampuan MPP yang tergolong sedang.Kata Kunci:   Instrumen, Pendekatan Scientific, Strategi What If Not, Mathematical Problem Posing

PELATIHAN SOFTWARE WINGEOM UNTUK MENINGKATKAN KOMPETENSI GURU DI KECAMATAN PANGALENGAN

Community service is conducted in the form of a training workshop on the use of wingeom software for elementary, junior and senior high school teachers in Pangalengan District. The purpose of this service is to improve teacher competence in using learning software in the classroom, especially wingeom software. The location of the service was held at SMAN 1 Pangalengan, with a total of 51 participants. Researchers conducted initial observations by distributing questionnaires on the google form. The results of preliminary observations indicate that teachers in schools are still lacking in the use of ICT, especially mathematical software in learning. The teachers do not have the skills to use the software in learning mathematics. The lack of use of ICT is due to the teachers' lack of understanding of ICT, so that teachers have difficulty in operating mathematical software. This has encouraged the implementation team to conduct wingeom software training to improve the competence of teachers in the ICT field in Pangalengan District. During the wingeom software training, the teachers were very enthusiastic in following their activities from the beginning to the end of the training. Through the questionnaire at the end of the training it was found that the teachers could master the wingeom software and be able to apply the software when learning especially learning about geometry. Wingeom software training can improve the competence of teachers in Pangalengan District. Through this mathematics software training, the teacher has skills n teaching mathematics that is interesting and fun for students

Development of Student Worksheets to Improve the Ability of Mathematical Problem Posing

Activities posing and solving a problem are important parts in mathematics, so the problem posing is an activity that was instrumental in mathematical thinking and become an important part in solving the problem. This type of research is research and development that aims to develop student worksheets through scientific approach with what if not strategy. The research method consists of stages: literature study, observation, interviews, development of student worksheets, assessment of two experts, and restricted trial to the eleventh grade students in SMAN 2 Cimahi, SMAN 3 Cimahi, and SMAN 4 Cimahi. Based on the findings, it was concluded that the student worksheets through scientific approach with what if not strategy load some activities including observing, questioning, trying, reasoning, and concluding. The activity of questioning using what if not strategy involves changing data, adding data, changing data with the same question, or changing question with the same data. The student worksheets also presented some contextual problems in accordance with the experience of students. After tested using worksheet, the improvement of student mathematical problem posing in the three schools was in moderate criteria

The Implementation of Kahoot to Improve Students' Understanding Ability on Integral Materials

The ability to understand mathematics is a basic ability that must be improved because there are still many students who have low understanding abilities. Kahoot learning media can improve students' mathematical understanding abilities according to the material and student characteristics. The purpose of this study is to determine the success of applying Kahoot media in improving the ability to understand mathematics in integer material for junior high school students. The method used in this research is quantitative. The data collection technique comes from the results of a description test of 4 questions regarding students' mathematical understanding abilities in integer material. Quantitative data analysis techniques were processed using descriptive and inferential statistics using Microsoft Excel and SPSS applications. This research was conducted on students at one of the MTs in West Bandung class VII as many as 22 students. The results showed that there was an increase in students' mathematical understanding abilities as indicated by the learning outcomes and student responses after the learning process took place. Students can develop their mathematical understanding skills with the help of this Kahoot media. This increase can be proven by the increase in students' pre-test and post-test results as evidenced by the calculation of the n-gain value. The results of the n-gain calculation show that the increase in students is 0.83 in the high category. This means that the application of kahoot media is successful in increasing students' mathematical understanding of integer material

Pengembangan bahan ajar materi statistika menggunakan pendekatan saintifik berbantuan geogebra

This study aims to determine the feasibility of developing statistics teaching materials using a geogebra-assisted scientific approach. The development research method with 3D models includes the define, design, and develop stages. The research was conducted at SMP Negeri 3 Cimahi, which is located in the Sriwijaya complex in Cimahi City. The research subjects in the small-scale trial were 15 students in class VIII-I, and in the large-scale trial, there were 33 students in class VIII-K. The data collection method used instruments in the form of interview sheets, validation sheets, and student response questionnaires. Data processing techniques used descriptive statistics with the help of the 2019 version of Microsoft Excel software were analyzed to find out the results of the validation and practicality analysis. Based on the results of the data analysis, it shows that the teaching materials developed have the interpretation of "Very Valid" and "Very practical," so that they are feasible to use

The Implementation of Constructive Approach to Improve Students' Problem Solving Ability and Self Concept Ability

The ability to solve mathematical problems is very important because it is one of the abilities that belong to the ability to think at a high level, therefore it must be trained. One of the factors that can support this is self-concept in doing something and especially in learning mathematics, but this is inversely proportional to the field which stated that self-concept and mathematical problem-solving abilities were still relatively low, the panelists were interested in conducting a research entitled the application of a constructivist approach to improve mathematical problem-solving abilities and self-concept of junior high school students, this study used the experimental method using experimental design and schematized by researchers therefore the researcher chose Krida Utama Middle School Jl. Gedong Lima No. V, Kertamulya, Kec. Padalarang, of course, with class divisions, namely an experimental class and a control class of 30 students. To measure mathematical problem-solving abilities and self-concept towards mathematics, the researcher makes a design or learning that is by the approach and makes measurement tools clear and accurate to see the results of constructivism learning, in the final posttest results from the experimental class obtains a Ngain value of 0.5968 in the learning category the experimental class has a pretty good category, and from the results of distributing the Self Concept questionnaire to learning mathematics using the constructivism approach it gets a percentage score of 77.71%, this indicates that learning using the constructivism approach can have a good effect on students' mathematical problem-solving abilities and concepts students towards learning mathematics

DISCOVERY LEARNING MODEL AS A SOLUTION TO DEVELOP STUDENTS’ UNDERSTANDING IN MATRIX CONCEPT

Abstract:This study aims to examine the increasing mastery of the concept of the matrix through the Discovery Learning model. This research is a class action research. The subjects in this study were students of Class XI TEDK-A at SMK Negeri 1 Cimahi. Data sources are teachers and students. Data collection techniques using tests and observation sheets. Based on data analysis, the average of student learning outcomes has increased by 77.42, from the first test cycle achieved by 10.00 to the last testing cycle achieved by 87.42. From the results, it can be concluded that there is an improvement in students' mathematical understanding of the matrix material in class XI TEDK-A in SMK Negeri 1 Cimahi students who use the discovery learning model. Abstrak:Penelitian ini bertujuan untuk menguji apakah penguasaan konsep matriks melalui model Discovery Learning dapat ditingkatkan. Jenis penelitian ini adalah penelitian tindakan kelas. Subjek dalam penelitian ini adalah siswa kelas XI TEDK-A di SMK Negeri 1 Cimahi. Sumber data diperoleh dari guru dan siswa. Teknik pengumpulan data menggunakan tes dan lembar observasi. Berdasarkan analisis data, rata-rata hasil belajar siswa meningkat sebesar 77,42 dari siklus tes pertama yang dicapai sebesar 10,00 hingga siklus pengujian terakhir yang dicapai oleh 87,42. Dari hasil penelitian dapat disimpulkan bahwa terdapat peningkatan pemahaman matematis siswa pada materi matriks siswa kelas XI TEDK-A di SMK Negeri 1 Cimahi dengan menggunakan model Discovery Learning

Analysis of Vocational School Student’s Mathematical Reasoning in Quadratic Equation

Essay test questions in mathematics learning at Vocational High Schools show that most students have difficulty answering questions about quadratic equations, this is the basis of the research. The reason this problem can occur is because students are not careful in interpreting questions so students cannot master inductive indicators. The purpose of this study is to find out more about students' mistakes when answering questions about mathematics through analysis and description of some of the students' mistakes in answering questions about quadratic equations, therefore this study uses a descriptive method with a qualitative approach. The research subjects were students of class XI Software Engineering at a Vocational High School in Kabupaten Bandung Barat with a total of 15 students. The stages in this research are planning, implementation, and reporting. Student test results as many as three questions are used to collect data. The analysis technique used is data reduction, by presenting the data then conclusions are drawn. The results and discussion of this study showed that students made mistakes in answering quadratic equation questions. The accuracy of students towards questions number 1 and number 3 is still low, so it is necessary to do regular exercises. Students' mathematical reasoning abilities need to be honed again. It can be seen from the results of the answers to question 2 that students have not been able to interpret the questions so that inductive indicators on students' mathematical reasoning abilities have not been fulfilled