Penelitian ini bertujuan untuk mendeskripsikan efektivitas pemanfaatan video pembelajaran berbasis Geogebra dalam meningkatkan kemampuan pemahaman konsep matematis siswa Sekolah Menengah Kejuruan. Desain penelitian kuasi eksperimen ini adalah nonequivalent control group design. Teknik pengumpulan data yang digunakan adalah wawancara dan tes kemampuan pemahaman konsep matematis. Analisis data dalam penelitian ini menggunakan uji U Mann-Whitney. Hasil analisis data menunjukkan bahwa peningkatan kemampuan pemahaman konsep matematis siswa yang menggunakan video pembelajaran berbasis Geogebra lebih baik dibandingkan siswa yang belajar dengan pembelajaran konvensional. Video pembelajaran berbasis Geogebra efektif dan berpengaruh positif terhadap peningkatan kemampuan pemahaman konsep matematis siswa. Video pembelajaran berbasis Geogebra ini dapat dijadikan sebagai salah satu media pembelajaran untuk meningkatkan kemampuan pemahaman konsep matematis siswa.The use of learning video-based Geogebra to improve students’ ability in understanding mathematical conceptsAbstractThis study aimed to describe the effectiveness of the use of learning video-based Geogebra to improve Vocational High School students’ ability in understanding mathematical concepts. This quasi-experimental research was a non-equivalent control group design. Data collection was done through interviews and tests of students’ ability in understanding mathematical concepts. The data analysis uses the U Mann-Whitney test. The results of this research show that the improvement of students’ ability to understanding a mathematical concept by using learning video-based Geogebra was better than students who learn by using conventional learning. Learning video-based Geogebra was effective and have a positive effect on improving students’ mathematical concepts. Learning video-based Geogebra could be used as one of the learning media to improve students’ mathematical concepts.

This research aimed to develop a definition maps-based plane geometry module to improve the student teachers' mathematical reasoning skills based on the level of Van Hiele. This development research was to produce a product in the form of a module at the college level. This research referred to the ADDIE model involving five stages, i.e. analyze, design, develop, implement, and evaluate. The instruments for data collection were observation sheet, Focus Group Discussion (FGD), assessment sheets, questionnaires, and test. The collected data then were analyzed usingAiken's validity, descriptive and inferential statistical analysis. The questionnaire instrument developed for student teachers was in a good category. The instrument used to test the effectiveness of the module was in a good category. A definition maps-based plane geometry module was in the criteria of feasible, practical and effective. The module was significantly developed in improving mathematical reasoning skills to rigor level.

Penelitian ini bertujuan untuk menguji apakah terdapat perbedaan kemampuan komunikasi matematis antara mahasiswa yang belajar menggunakan model kooperatif tipe TSTS dengan mahasiswa yang belajar menggunakan metode konvensional. Jenis Penelitian ini adalah penelitian Quasi Eksperimental Design. Desain yang digunakan adalah Pretest-Postest Control Group Design. Hasil penelitian menunjukan bahwa perbedaan rata-rata menggunakan uji t pada a=0,05 diperoleh thitung= 2,32 dan ttabel = 2,00 sehingga thitung< ttabel tidak terpenuhi. Dengan demikian dapat disimpulkan bahwa terdapat perbedaan kemampuan komunikasi matematis antara mahasiswa yang belajar menggunakan metode model kooperatif tipe TSTS dengan mahasiswa yang belajar menggunakan metode konvensional

Students' success in learning is inseparable from their high level of fighting power or the Adversity Quotient (AQ) they have. This study examines whether there was an Adversity Quotient (AQ) difference between Boarding Schools (BS) and Non-Boarding Schools (NBS) students through the application of metacognitive learning Think-aloud cooperative setting through the application of metacognitive learning Think-aloud cooperative setting Think-Pair-Share (MTPS), Think-Pair Square (MTPQ), and Conventional Class (CC). The researchers used quasiexperimental research design. The data collection in this study involves students in 2 schools namely; boarding schools (BS) and non-boarding schools (NBS) system in Pekanbaru. With statistics analysis of ANOVA, it was found that there was a difference of AQ of students to the learning of mathematics in the three groups of learning strategies (MTPS,MTPQ, CC). The strategies that best influence the successive AQ of students are the strategies of MTPS, CC, MTPQ. There was also an interaction effect between learning strategies with the school system on AQ students. Student AQ is higher in the NBS group in BS students. Student AQ indicators are high on control and reach aspects, while other indicators are categorized (origin, ownership, and endurance). This research contributes to the development of the study of metacognitive think-aloud strategy and adversity quotient in mathematics learning.

This research is a quantitative research with cross-sectional design that aims to examine the association between students 'mathematical analogy abilities with students' mathematical communication abilities. The subject of this research is 33 students of class VII in one of Junior High School of Kampar Regency of Riau Province. The instrument used is a essay test about the problem of mathematical analogy and mathematical communication. Data analysis techniques to test the association of both capabilities based on the category of contingency association test (Pearson Chi Square test and contingency coefficient). The results showed that this study was an association between students' mathematical analogy abilities with students' mathematical communication abilities. The degree of association between students 'mathematical analogy abilities with students 'mathematical communication abilities is high.