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This study aims to improve the mathematics learning outcomes of 4th grade students of SDN Dukuh Kupang V, Panguragan District, Cirebon Regency Semester 2 of the 2022/2023 academic year by using the Problem Based Learning model. This research is a classroom action research (PTK) conducted in two cycles. The subjects in this study were 4th grade students of SDN Dukuh Kupang V Surabayai, totaling 30 students. The variables in this study consisted of independent variables, namely the Problem Based Learning model and the dependentvariable, namely math learning outcomes. Data collection techniques using test techniques. Data analysis techniques using comparative descriptive in the form of percentages of math learning outcomes in pre-cycle, cycle I and cycle II. Based on the results of the study, it can be concluded that learning with the Problem Based Learning model can improve learning outcomes in mathematics subjects on the perimeter area of flat shapes. The results before the action was taken,namely in the pre-cycle only 13 students or 43% were complete, in cycle I increased to 21 studentsor 70% who completed learning math and in cycle II increased again to 26 students or 86% who completed learning. This research is said to be successful because it reaches the performance indicator which is > 80% of all students with KKM 70.

A flat shape is a geometric part that only has a perimeter and area. There are various shapes of flat shapes, such as triangle, square, long, parallelogram, rhombus, kite, trapezoid, and circle. The aim of this research is to conduct a literary analysis related to the difficulties faced by students in expressing their ideas in the subject. which are given. The analysis method used is called Systematic Literature Review (SLR). Data collection was carried out by documenting and reviewing 7 national index articles; the articles are then broken down into different areas. Based on the research results, there are thirteen articles that discuss the difficulties experienced by students when solving problems related to the topic of building a flat-sided room. Based on the research results, it can be concluded that there are still problems that students often face when trying to solve problems related to the construction of flat-sided spaces. The most common types of errors are formula errors, errors in shape identification, and errors in understanding the concept of plane figures. This is caused by uneven understanding of concepts, inaccurate determination of formulations, and uneven student bias in understanding the results of flat shapes.

Mathematics is a field of study that has an important role in education. Geometry is one of the mathematics materials taught in primary and secondary schools. However, students in PGMI 3 class still experience many misconceptions in understanding plane material by applying polya theory. The aim of this research is to identify and analyze common misconceptions related to plane material by applying polya theory. This research uses a qualitative method with a descriptive approach. The subjects of this research were 18 out of 39 PGMI 3 UIN North Sumatra students. The results of the research show that there are several misconceptions that occur which involve basic understanding of plane material, steps in solving problems with plane material, misunderstandings about what polya theory is like and making mistakes by not putting symbols in solving problems. This research aims to provide important insights into curriculum development and a more effective teaching approach in working on plane material by applying polya theory. With a more effective understanding of the misconceptions that arise in plane shape material by applying polya theory, appropriate action can be taken to overcome this problem and can help PGMI 3 students at UIN North Sumatra to develop an understanding of plane shape material by applying polya theory better.

This research aims to 1) analyze students' problem solving abilities in solving story problems based on polya stages in plane material in the PGMI 3 class at UIN North Sumatra, 2) find out how to improve students' problem solving abilities in solving story problems based on polya stages. This research uses a qualitative descriptive research type. Data collection in this research was carried out by means of written tests, interviews and documentation. Subjects were taken in this research using purposive sampling technique. Interviews were conducted with research subjects and class teachers. The research results obtained were that students with low abilities were quite capable of goingthrough the stages of understanding the problem and preparing a solution plan. Students with moderate abilities are able to go through the stages of understanding the problem, preparing a solution plan, and implementing the solution plan. Meanwhile, students with high abilities are able to go through all stages of Polya problem solving.

. Based on needs analysis and interviews, it shows that flat building material does not use innovative media and the minimal use of technology-based learning media, causes students to feel bored and less interested when learning in class. This research aims to produce LABADA Game products for feasible flat building materials. This type of RnD development research has been developed by Sugiono with seven steps, namely (1) looking for potential and problems at SDN Kepanjenlor 2, SDN Sentul 1 and SDN Sentul 3, (2) Carrying out research and collection by interviewing class IV teachers, distributing needs questionnaires students and observing mathematics learning, (3) product design is carried out by analyzing learning and planning product content, (4) Design validation is carried out by 9 validators consisting of 3 material validators each, media validator and language validator, (5) Design revision carried out based on expert advice, (6) Limited trials carried out by 10 class IV students and 5 class IV teachers, (7) product revisions based on teacher and student suggestions. The instrument in this research is a questionnaire. The feasibility results from material expert validators were 91.85%, media experts 89.44%, and language experts 86.67%. The results of the teacher's readability questionnaire for the LABADA game obtained a percentage of 91.29% and the results of the student's readability questionnaire obtained a percentage of 94.17%.    

This research aims to analyze mathematics learning, especially in number material, as well as classify students' mathematical problem solving abilities. , interviews and documentation. 12 students have no value, 5 students have moderate values and 3 students have very high scores, the questions given are 5 all description questions. In making mathematical problem solving questions we use indicators namely: 1.) Understanding new mathematical knowledge through problem solving, 2.) Designing mathematical models, 3.) implementing and adapting appropriate strategies to solve problems, 4.) completing models, 5.) monitor and reflect on the process of solving mathematical problems. Of the 5 questions, they are then assessed with an assessment rubik according to the points specified in the question grid used. The results of the assessment were categorized into 3 categories, namely high, medium category, and low category in class IV SD 1 Burikan.

Tujuan dari penelitian ini yaitu untuk mengetahui ada tidaknya pengaruh project based learning terhadap kemampuan pemecahan masalah matematika siswa di SDN Dukuh Menanggal 1/424 Surabaya. Penelitian ini merupakan kuantitatif eksperimen semu. Desain penelitian ini adalah nonequivalent posttes-only control design. Populasi dalam penelitian ini adalah seluruh siswa kelas II SDN Dukuh Menanggal 1/424 Surabaya yang berjumlah 72 siswa. Melalui cluster random sampling terpilih sampel kelas II-A sebagai kelas eksperimen dan kelas II-B sebagai kelas kontrol. Teknik pengumpulan data pada penelitian ini yaitu menggunakan tes. Teknik analisis data yang digunakan yaitu dengan menggunakan uji statistika yang terdiri dari uji normalitas, uji homogenitas dan uji hipotesis dengan menggunakan uji-t. Berdasarkan hasil dan pembahasan penelitian maka dapat disimpulkan bahwa ada berpengaruh pembelajaran model project based learning terhadap kemampuan pemecahan masalah pada materi bangun datar siswa kelas II sd di SDN Dukuh Menanggal 1/424 Surabaya. Hasil penelitian ini dapat dijadikan pertimbangan untuk menerapkan project based learning di sekolah dasar

The research method used in this study is the research and development method or also called Research and Development. The research design that will be developed in this study uses the development model presented by Borgan Gall. The product produced in this study is an Arduino Nano-Based Distance Measuring Tool with a Display on the LCD on the Flat Side Room Building Material for Class VIII at SMP Negeri 5 Sepauk. The test subjects of this study included two subjects. The first subject is the validator and the second is class VIII students of SMP Negeri 5 Sepauk. The analysis technique used is to determine the effectiveness, practicality, and validity. The percentage of effectiveness from the average of the two analyzes obtained a percentage value of 94.06% with Very Effective criteria used in learning mathematics. The results of the combined teacher and student response questionnaires - the average percentage obtained was 89.55% with very practical criteria. The combined results of the average percentage obtained from the percentage of experts and the results of the measurement trials obtained a percentage of 76,36% with very valid criteria.    

Pembelajaran matematika tingkat Sekolah Dasar yang dirasa sulit pada masa pandemi Covid-19, minimnya kegiatan belajar matematika dan rendahnya kemampuan anak-anak dalam menentukan bangun datar di Rumoh Baca Hasan Savvas menjadi latar belakang kegiatan pengabdian. Tujuan pengabdian ini adalah memberikan pendampingan belajar matematika materi bangun datar dengan menarik, yaitu melalui media Tanggram 7. Partisipan berjumlah 15 orang anak-anak tingkat Sekolah Dasar yang berada di sekitar Rumoh Baca Hasan Savvas di Gampong Jambo Timu Kecamatan Blang Mangat, Kota Lhokseumawe. Metode yang digunakan yaitu sosialisasi, diskusi, latihan soal dan pembahasan. Hasil pendampingan menunjukkan pada setiap pembelajaran peserta terlihat senang, aktif dan memperhatikan pembahasan media Tanggram 7. Peserta tertarik mengubah-ubah bentuk bangun datar dari media Tangram 7, sehingga berdampak pada peningkatan pengetahuan terhadap materi bangun datar. Peningkatan pengetahuan dapat dilihat dari perolehan nilai N-Gain sebesar 72% dengan kriteria Tinggi. Hasil pendampingan menunjukkan adanya peningkatan pengetahuan terhadap bangun datar melalui media Tangram 7.

This research aims to produce learning media for the Ethnomathematics Student Worksheet on Traditional Market Snacks in Pontianak City on the flat-sided building material that reaches the level of validity, practicality, and effectiveness. This study uses a 4D design model, which is modified into 3D, namely define (definition), design (design), development (development), without using the fourth stage, namely disseminate, because this refers to the initial goal of this research is to develop valid, practical and effective media contained in the third step of the development of this model, namely development. The subjects in this study were students of class VIII SMP Suster Pontianak with a total of 20 students. The instruments used in this study were validation sheets, questionnaires, and test questions. Based on the results of the first study, the validation of the Ethnomathematics Student Worksheet with an average value of 84,76% from expert activities was very valid with a very good category. The second is the value of practicality, seen from the value of the questionnaire filled in by the teacher, the percentage is 97% with very practical criteria. to see the effectiveness of the ethnomathematics-based student worksheet learning media compared to the Likert scale index, with a percentage of 81.11% in the very effective criteria.    

Judul dari penelitian ini adalah Etnomatematika dalam Tradisi Upacara Adat Maruba  di Kerajaan Hulu Ai’k Kecamatan Hulu Sungai Kabupaten Ketapang. Fokus penelitian ini adalah untuk menemukan 1) Apa saja alat-alat yang digunakan pada tradisi upacara adat maruba yang mengandung unsur matematika? 2) Apa saja aktivitas upacara adat maruba yang mengandung unsur matematika?. Metode penelitian yang digunakan dalam penelitian ini adalah Metode Deskriptif kualitatif! Bentuk penelitian ini merupakan studi kasus yang bertujuan untuk menghimpun atau menganalisis data berbagai fenomena-fenomena yang menjadi subjek penelitian di sini peneliti memberikan pertanyaan-peratanyaan dan tes yang terstruktur kemudian data dianalisis secara kualitatif deskriptif untuk mengetahui kebenaran yang terdapat pada lokasi penelitian. Data dan jenis data dalam penelitian ini adalah data primer dan data sekunder. Alat yang digunakan untuk mengumpulkan data adalah dengan menggunakan lembar observasi, pedoman wawancara dan dokumen. Hasil penelitian menuajukan bahwa alat-alat tradisional tradisi upacara maruba dikerajaan hulu sungai etis Dayak krio yang dapat digunakan dalam pembelajaran matematika di sekolah yaitu ketawak/ gerantung, mangkok tanah, kain batik, tempayan, bosi/parang, ancak, piring keramik,pahar, tanduk kerbau, dan kain kuning, adapun materi matematika yang dapat mengunakan alat-alat tradisional tradisi upacara adat maruba di kerajaan hulu sungai etis Dayak krio tersebut adalah, namgun datar, bangun ruang, dan oprasi bilangan bulat. Selanjutnya, ada enam aktivitas yang terdapat didalam tradisi upacara adat maruba dikerajaan hulu aik suku Dayak krio  yang mengandung unsur matematika antara lain aktivitas  duduk gae, begamal betabuh menari maigal, beramu, pencucian benda pusaka, buang sial tolak bala, dan aktivitas timang tanduk sengiang holing rata-rata materi matematika yang termuat adalah materi membilang, mengukur, dan oprasi hitung, penjumlahan dan perkalian.

Penelitian ini bertujuan untuk mendeskripsikan learning obstacles  siswa terkait materi bangun ruang sisi datar khususnya kubus dan balok, mendesain bahan ajar berbasis kemampuan pemahaman matematis pada materi bangun ruang sisi datar yang valid, dan untuk membuat rencana implementasi bahan ajar. Penelitian ini dilatarbelakangi oleh kurangnya kemampuan pemahaman matematis siswa pada materi bangun ruang sisi datar kelas VIII SMP. Kurangnya kemampuan pemahaman matematis siswa dilihat dari kesulitan yang dialami siswa saat mempelajari materi bangun ruang sisi datar yang disebut juga dengan hambatan belajar. Adapun salah satu cara mengatasi hambatan belajar tersebut adalah dengan menggunakan desain bahan ajar. Metode yang digunakan pada penelitian ini adalah metode kualitatif dan kuantitatif. Subjek dalam penelitian ini adalah  39 siswa kelas VIII D SMP Negeri 2 Jamblang. Teknik pengumpulan data dalam penelitian ini adalah dengan melakukan tes dan non tes. Hasil penelitian ini menunjukan bahwa terdapat 5 macam hambatan beajar siswa terkait kemampuan pemahaman matematis pada materi bangun ruang sisi datar. Validasi terhadap bahan ajar modul matematika dilakukan oleh lima ahli. Berdasarkan hasil validasi yang telah diperoleh dapat disimpulkan bahwa bahan ajar modul dan rencana implementasi bahan ajar yang dibuat untuk memudahkan guru dalam mengimplementasikan bahan ajar yang didesain layak digunakan dalam proses pembelajaran.    

Rapid technological advances make print communication media begin to be shifted by information media that utilizes computer technology as a means of delivery. Technological developments change the teacher's task from being a teacher to a facilitator who provides convenience in learning. SD Negeri 004 Bangsal Aceh is one of the schools that still applies the mathematics learning process using textbooks so that students do not understand the lesson. Teachers are required to make changes in teaching patterns in the classroom, one of which is with animated videos. This study uses the Multimedia Development Life Cycle (MDLC) method covering concept, design, collecting material, assembly, testing and distribution. The final result of this research is an animated video of mathematics learning about the material of flat shapes. Animated videos are used as an interesting and effective means of information and learning media. Besides that, it can also improve students' understanding and skills in learning mathematics, especially the material of flat shapes