Flipped Classroom model is a model where in the learning process is not like in general, that is in the learning process students learn the subject matter at home before the class begins and teaching and learning activities in the class in the form of tasks, discussion about materials or problems that students have not understood. The purpose of this study is to determine the effect of Flipped Classroom model on the ability of understanding mathematical concepts. This research type used Quasi Experiment Design research and sampling technique used is Probability Sampling method with Random Sampling technique. Hypothesis test used in this research is t-test. The result of statistical test shows that the value of t_hitung based on the calculation obtained t_hitung = 12.868, and t_tabel = 1.668 so t_hitung> t_tabel, with a real level of 0.05 in other words it can be concluded that the understanding of mathematical concepts of students who expected model Flipped Classroom is better than the ability to understand concepts that are applied with lecture methods

AbstrakBerdasarkan perkembangan kognitif siswa SMP mulai mampu berpikir formal, mampu untuk berpikiri tingkat tinggi yaitu (high order mathematical thinking atau high level mathematical thinking, and low order mathematical thinking atau low level mathematical thinking). Metode penelitian yang digunakan adalah deskriptif kualitatif. Pengambilan subjek pada penelitian ini adalah menggunakan teknik purpose sampling. Teknik pengumpulan data yang digunakan adalah metode tes, angket, observasi dan wawancara. Analisis data dilakukan secara diskriptif kualitatif. Penlitian ini melihat bagaimana kemampuan berpikir kritis matematis berdasarkan kecerdasan multiple intelligences siswa yaitu Siswa mempunyai Kecerdsan Linguistic Intelligences, LogicalMathematical dan Spatial Intelligeces. Masing-masing kecerdasan multiple intelligences mampu dalam membaca soal dengan baik, mampu mengidentifikasi informasiinformasi, menuliskan simbol matematika secara lengkap, menuliskan simbol matematika yang berbeda. Mampu memahami apa yang akan dilakukan, punya ide untuk memisalkan simbol-simbol matematika. Siswa mampu membuat rumus matematika dengan jelas, mampu membedakan, menyamakan, mengintegrasikan, mengelompokkan antara variabel menganalisis, mengevalusi, membuat hipotesis, menyimpulkan, mengkritik, memprediksi, merancang, membangun, merencanakan, memproduksi, menemukan, membaharui, menyempurnakan, memperkuat, memperindah, menggubah. Siswa yang mempunyai kecendrungan kecerdasan Linguistic Intelligences cara menuliskan jawaban dilihatsegi bahasa tata kalimat yang

This study aims to determine the comparison of students 'mathematical representation ability through the Project Based Learning (PjBL) Model and the students' mathematical representation ability through the conventional model. The PjBL model is a student-centered, innovative, project-based learning model and positioned teachers as effective facilitators in the contextual learning related to real life situation. This research employed quasi-experimental design. The research applied the posttest only non-equivalent control group design through randomized cluster sampling. The data collection technique used was test. The instrument used to collect the data was the essay test. Data analysis was conducted using independent sample t-test. The result of the data calculation through the Independent-Sample T-Test test obtained the significance level of 0.913 means that the students’ mathematical representation ability was better after the learning through Project Based Learning (PjBL) model was conducted compared to the students' mathematical representation ability through a conventional model. This means that the PjBL model is more influential on students' mathematical representation ability.

This research aims to develop a mathematical learning media using Geogebra software. The research method is used the 4D (Four D Model) research method adopted by Siva sailam Thiagarajan, Dorothy S. Semmel, and Melvyn I. Semmel. namely, define, design, develop. The data collection techniques are used to obtain the data on questionnaires response and interviews. The instruments in this research used questionnaires. The data analysis method using descriptive method. This research is conducted by describing the results of product development in the form of learning media for small groups and large groups with media that has been validated by some validators. The Experts of validation results on the content quality aspect to obtain results with very good criteria and on aspects of the language to obtain results with very good criteria. Trial students VII class in small classes and large classes obtained results with interesting criteria for small groups.

This study aims to determine the effect of mathematical problem solving ability of learners who follow the learning by using an instructional model of maple assisted software assisted, with learners who use, study group investigation model, as well as learners who follow the conventional learning model conducted by researchers on participants Students of class X SMK Muhammadiyah 1 Metro. This type of research is a quasi experimental research with posttest only control design design. Hypothesis test using a one-way anava test with unequal cells and obtained the conclusion that the model of group investigation learning is better than an instructional model of maple assisted software group and both models of learning is better than conventional learning model. Based on the results of analysis and discussion of research data obtained that there is an influence on the ability of solving mathematical problems among students in class applying group investigation model assisted maple software, students in class apply only group investigation learning model, and students whose class apply the conventional learning model on the principal Discussion of the matrix.