Tujuan penalitian ini adalah menghasilkan bahan ajar matematika melalui pendekatan kearifan lokal pada materi trigonometri yang layak dan sesuai kebutuhan siswa. Jenis penelitian ini adalah Penelitian dan Pengembangan (R&D) dengan menggunakan model ADDIE yang terdiri dari lima tahap, yaitu analyze (analisis), design (perancangan), development (pengembangan), implement (implementasi) dan evaluate (evaluasi). Instrumen yang digunakan yaitu lembar angket validasi ahli materi dan ahli media, angket respon guru matematika, dan angket respon siswa. Berdasarkan penelitian diperoleh hasil validasi ahli dengan persentase 80% (layak), respon guru dengan persentase  79% (baik) dan respon siswa dengan persentase 78% (baik). Secara keseluruhan bahan ajar ini dapat di terima dengan baik oleh guru dan siswa didukung oleh hasil validasi dari para ahli yang menyatakan bahan ajar layak digunakan untuk kegiatan belajar. Kata kunci: bahan ajar, trigonometri, kearifan lokal ABSTRACT The purpose of this research is to produce mathematics teaching materials through a local wisdom approach to trigonometry material that is appropriate and in accordance with the needs of students. This type of research is Research and Development (R&D) using the ADDIE model which consists of five stages, that is analyze, design, development, implement and evaluate. The instrument used were questionnaire validation sheet material experts and media expert, mathematics teacher response questionnaire and student response questionnaire. Based on the research results obtained by expert validation with a percentage of 80% (feasible), teacher response with a percentage of 79% (good) and responses students with a percentage of 78% (good0. Overall this teaching material can be well received by teachers and studens, supported by validation results from experts who claim teaching materials are suitable for use in learning activities. Keywords: teaching materials, trigonometry, local wisdom

[Title: Development of Quick Math Module Based on Mobile Learning as a Support for Mathematics Learning in High School]. Learning resources is a very important component of the learning process. One of the learning resources that can be utilized independently is the module. The purpose of this research is to develop the Quick Math module and evaluate the feasibility of the module. The development model used is the ADDIE model namely analysis, design, development, implementation and evaluation. The subject in this study was 15 students consisting of low, moderate and high-performance level and 6 teachers at SMA Negeri 2 Kota Serang. The instruments used to collect data in this research consist of expert validation questionnaire (content and media), Teacher and student response questionnaire. Based on data analysis results, obtained the score of the content material about 86.4% with a very feasible category, media experts about 88% with very feasible category, teacher response of 92% with very good category and student response of 88.39% with the very good category. Based on the data analysis it can be concluded that the Quick Math module is developed feasible to be used as a learning resource in accordance with the demands of the 2013 curriculum. This app makes it easy for students to access flexible learning resources wherever and whenever

The ability of mathematical reflective thinking is the ability to interpret a case based on the mathematical concepts involved, can evaluate the truth of an argument, can draw analogies from two similar cases, can analyze and clarify questions and answers, can generalize, and can distinguish between relevant data and not relevant. This ability is one of the high-level thinking skills that can be optimized through integrated learning in everyday life, namely learning with Environmental Based Problem Based Learning. To find out, a quasi-experimental study was conducted which aimed to find out the improvement of mathematical reflective thinking skills in terms of the high, medium and low mathematical abilities of the group. The subject of the research was class XI in SMA Negeri 1 Cilegon which was selected by cluster random sampling in the sequence and series material. The results of the data analysis showed that the Environmental Based Problem Based Learning model was better than the expository learning in improving the achievement and improvement of students' mathematical reflective thinking skills both viewed as a whole and viewed from the initial high, medium and low mathematical abilities. ABSTRAKKemampuan berpikir reflektif matematis adalah kemampuan untuk menginterpretasi suatu kasus berdasarkan konsep matematika yang terlibat, dapat mengevaluasi kebenaran suatu argumen, dapat menarik analogi dari dua kasus serupa, dapat menganalisis dan mengklarifikasi pertanyaan dan jawaban, dapat menggeneralisasi, serta dapat membedakan antara data yang relevan dan tidak relevan. Kemampuan ini merupakan salah satu kemampuan berpikir tingkat tinggi yang bisa dioptimalkan melalui pembelajaran yang terintegrasi dalam kehidupan sehari-hari, yaitu pembelajaran dengan Problem Based Learning Berbasis Lingkungan. Untuk mengetahui itu dilakukan penelitian kuasi eksperimen yang bertujuan mengetahui peningkatan kemampuan berpikir reflektif matematis ditinjau dari kemampuan awal matematis kelompok tinggi, sedang dan rendah. Subjek penelitian adalah kelas XI di SMA Negeri 1 Cilegon yang dipilih secara cluster random sampling pada materi barisan dan deret. Hasil analisis data menunjukkan model Problem Based Learning Berbasis Lingkungan lebih baik dibandingkan dengan pembelajaran ekspositori dalam meningkatkan pencapaian dan peningkatan kemampuan berpikir reflektif matematis peserta didik baik dilihat secara keseluruhan maupun ditinjau dari kemampuan awal matematis tinggi, sedang dan rendah. Kata kunci: kemampuan berpikir reflektif matematis, Problem Based Learning berbasis lingkungan.

Abstrak: Penelitian ini bertujuan meningkatkan pengetahuan bidang studi (content knowledge) sebagai unsur pembentuk kompetensi mahasiswa calon guru matematika dengan pembelajaran blended learning. Pengetahuan bidang studi dalam hal ini disebut hasil belajar. Desain penelitian menggunakan kuasi eksperimen karena akan membandingkan pengaruh suatu perlakuan. Teknik pengumpulan data dilakukan dengan tes. Untuk uji persyaratan normalitas, digunakan uji Kolmogorov-Smirnov, sedangkan uji homogenitas digunakan uji Levene. Untuk mengetahui perbedaan rerata, digunakan uji-t jika data berdistribusi normal. Sementara, jika data tidak berdistribusi normal digunakan uji Mann-Whitney. Hasil tes akhir pembelajaran dibandingkan untuk mengetahui pengaruh blended learning terhadap hasil belajar. Hasil pengolahan data menunjukkan bahwa hasil belajar kelas blended learning lebih baik daripada kelas biasa. Selain itu, mahasiswa blended learning lebih aktif mengerjakan tugas daripada kelas biasa. Kata Kunci: blended learning, calon guru matematika, content knowledge A BLENDED LEARNING MODEL IN THE MATHEMATICS EDUCATION STUDY PROGRAM IN UNTIRTA Abstract:This study was aimed to improve the content knowledge as an element for developing students’ competence through blended learning. In this study, this content knowledge is called learning achievement. The study used the experimental design. The data were collected using a test. To test the normality of data distribution, the Kolmogorov-Smirnov test was utilized, while to test the homogeneity of the variances, the Levene’s test was used. To test the hypothesis, the t-test was used. The findings showed that the learning achievement of the students taught using blended learning was better than that of those taught using the conventional method. In addition, the students taught using the blended learning were more active in doing the assignment than those in the conventional class. Kata Kunci: blended learning, mathematics students, content knowledge

Penelitian ini bertujuan untuk mendeskripsikan kemampuan literasi matematika yang ditinjau dari gaya kognitif siswa. Penelitian ini merupakan jenis penelitian deskriptif dengan pendekatan kualitatif. Subyek penelitian ini terdiri dari 4 siswa kelas X IPA 4 MAN 2 Kota Serang semester genap tahun ajaran 2019/2020. Instrumen yang digunakan pada penelitian ini adalah tes kemampuan literasi matematika, tes Group Embedded Figure Test (GEFT) untuk mengetahui jenis gaya kognituif siswa, dan pedoman wawancara. Hasil penelitian ini menunjukkan bahwa Siswa dengan gaya kognitif field independent dan field dependent secara bersamaan mampu menjawab dengan tepat dan memenuhi pencapaian indikator soal dengan baik pada level 1, 2, dan 5. Siswa field independent yang telah mampu menggunakan aspek penalaran spasial dan menggunakan representasinya dengan baik. Siswa field dependent belum mampu menggunakan aspek penalaran spasial dan belum dapat menggunakan representasinya dengan baik. Siswa field independent dan siswa field dependent belum mampu menggunakan konsep generalisasi.This study aims to describe the ability of mathematical literacy in terms of students' cognitive styles. This research is a type of descriptive research with a qualitative approach. The subjects of this study consisted of 4 students of Class X IPA 4 MAN 2 Serang City in the even semester of the 2019/2020 school year. The instrument used in this study was a test of mathematical literacy ability, a Group Embedded Figure Test (GEFT) test to find out the types of students' cognitive style, and interview guidelines. The results of this study indicate that students with field independent and field dependent cognitive styles simultaneously are able to answer appropriately and meet the achievement of problem indicators well at levels 1, 2, and 5. Field independent students who have been able to use aspects of spatial reasoning and use their representations with well. Field dependent students have not been able to use aspects of spatial reasoning and have not been able to use their representations properly. Field independent students and field dependent students have not been able to use the concept of generalization.Â