PENERAPAN MODEL PEMBELAJARAN THINK TALK WRITE (TTW) TERHADAP KEMAMPUAN KOMUNIKASI MATEMATIS SISWA

The purpose of this study was to determine the mathematical communication skills of class VII students at Muhammadiyah Middle School in Pasir Penyu. This type of research is a Quasi Experiment with the design of Randomized Subject Posttest-Only Control Group Design. The data analysis technique in this test uses the t-test. Based on the calculation of the hypothesis test shows the significant value of the sample class is 0.003 <0.05. Based on these results, H0 is rejected and Ha is accepted. So it can be concluded that the mathematical communication skills of students using the think talk write learning model is better than the mathematical communication skills of students using conventional learning models in class VII in the middle school Muhammadiyah Pasir Penyu.Keywords: Mathematical Communication, Think Talk Write

PENERAPAN MODEL PEMBELAJARAN THINK PAIR SQUARE (TPS) DENGAN MENGGUNAKAN LKS UNTUK MENINGKATKAN HASIL BELAJAR SISWA PADA MATERI SISTEM PERSAMAAN LINEAR DUA VARIABEL DI KELAS X SMA NEGERI 2 PEMATANGSIANTAR

The purpose of this study was to determine whether using the TPS learning model by using LKS can improve student learning outcomes in the material system linear equation two variable in class X Senior High Public School 2 of Pematangsiantar. The type of research used is classroom action research with 2 cycles. Subjects of class X-IPA 7. On the implementation of the first cycle of action, the result of the analysis of tests of students at the moderate (≥ 65) category in a classical manner were still not achived because only 52.78% of students were completed, with a grade average 65.00. After the implementation of the second cycle of action, the learning outcomes of students in the medium minimum category (≥ 65) have been achived classically, namely 86.11% with an average value 73.75. The increase in students’ mathematics learning outcomes from cycle I to cycle II was 21.11%. Based on the result of the above research it can be concluded that the application of the TPS learning model using LKS can improve student learning outcomes.Keywords: Laerning Outcomes, Think Pair Square (TPS), LKS

PERANAN REPRESENTASI BERBANTUAN SOFTWARE MAPLE PADA PEMBELAJARAN MATA KULIAH KALKULUS

Computers are essential tools for teaching, learning, and doing mathematics. Computers can visualize or represent mathematical ideas, organize and analyze data, and calculate effectively and accurately. Computers can help students conduct investigations through representations in various fields of mathematics such as geometry, calculus, statistics, algebra, measurements, and numbers. This paper discusses the role of Maple assisted representation in calculus learning. Representation is very supportive in increasing students' understanding of mathematical relations and concepts. There are three main functions of representation, namely complementing, constraining, and constructing. Complementing function is to complete the process and complete the information. The constraining function is to help students experience difficulties in a representation. The constructing function is to support constructing a deeper understanding of a concept. Students can get a deeper understanding if difficulties with only one representation. Maple software is a facility that is very supportive in making representations in learning mathematics as in calculus learning. By using Maple we can do numerical and symbolic calculations and perform graphical representations well. Maple can also effectively determine limits, derivatives, integrals, and a series of other functions and capabilities. With this Maple software capability, we can use it to improve students' understanding of calculus courses.Keywords: Representation, Computers, Maple, Calculus

UPAYA PENINGKATAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA MELALUI PENERAPAN MODEL PEMBELAJARAN KEPALA BERNOMOR STRUKTUR

This study aims to improve students' mathematical problem-solving abilities by applying the learning model with head numbered structure. This type of research is the Class Action Research (CAR). Data collection techniques used were tests and observations. The instruments used were the problem-solving ability test, observation sheet and data analysis techniques using the problem-solving indicator values. Based on the results of the problem-solving ability test that on indicator 1 that fulfills the completeness of learning in the first cycle 63%, and the second cycle 78%. Indicator 2 in cycle I 59%, and cycle 2 70%. Indicator 3 in cycle I as 52% and cycle II is 67%. Indicator 4 in cycle I 48%, and cycle II 63%. So it can be concluded that the students' mathematical problem-solving abilities increase through the application of the learning model with head numbered structure. Key words: Head Number Structure, Problem Solving

PENINGKATAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA TERBUKA MELALUI PENDEKATAN INVESTIGASI BAGI MAHASISWA PRODI PENDIDIKAN MATEMATIKA FKIP UMSU PADA MATAKULIAH TEORI BILANGAN

The research objectives are: (1) Knowing whether the approach to the mathematical investigation can improve the ability to solve open mathematical problems; (2) Knowing how the level of activity of students and lecturers in learning through a mathematical investigation approach. This type of research is Class Action Research. The research subjects were Students of Mathematics Education FKIP UMSU Academic Year 2018/2019. The object of research is the ability of lecturers to manage student learning and activities in the implementation of learning and the ability of students to solve open mathematical problems through an investigative approach to material numbers. The results of the study show that (1) The approach to the mathematical investigation can improve students' mathematical problem-solving abilities; (2) The approach to the mathematical investigation can increase the level of student activity. From the results of the initial test the ability to solve open mathematical problems an average value of 3.17, the average value of student cycle I tests is 10.73 (56.66%) students who have the ability to solve open mathematical problems and average test scores the second cycle was 12 (83.33%) students who had the ability to solve open mathematical problems. Based on the conclusions above, this study suggests that consider the application of a mathematical investigation approach in order to improve the quality of mathematics learning.Keywords: Mathematical Investigation, Problem-Solving, Open-Mathematics.

PENGARUH PENDEKATAN SAINTIFIK TERHADAP KEMAMPUAN HASIL BELAJAR MATEMATIS SISWA

This study discusses the influence of the scientific approach to mathematical learning outcomes. The type of research used in this writing is quasi-experimental, with scientific approach data collection on students' mathematical learning outcomes. Data analysis used with Simple Regression Analysis Test. Based on the analysis obtained by the results of the study, namely: the relationship or correlation between learning approaches with student learning outcomes with regression , with . The values for testing the data can use the Anova table and the significance level of 0.000 < 0.05. So that it can be said that the values of the two data are different. Thus, it can be concluded that there is the influence of the scientific approach to students' mathematical learning outcomes. This shows that the learning approach has a significant effect on students' mathematical learning outcomes. The coefficient of determination is means that the contribution or influence of the santifik approach (X) on the students' mathematical learning outcomes (Y) is . Thus, the scientific approach is better at contributing to students' mathematical learning outcomes.Keywords: Scientific Approach, Learning Outcomes

PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE THINK PAIR SHARE TERHADAP HASIL BELAJAR MAHASISWA PADA MATA KULIAH PENGANTAR DASAR MATEMATIKA-FKIP UMSU

The purpose of this study is to find out the effect of cooperative learning type Think Pair Share on student learning outcomes in basic mathematics introductory courses at the FKIP PGMS UMSU Study Program. This study was a quasi-experimental study, using the one group pretest posttes only model, using one class as the study sample. The research instrument used in this study was a test / quiz in the form of 23 objective / multiple choice questions about set material and relationships contained in the basic mathematics introductory course. Based on the data obtained from the research results, there is an increase in the quality of learning in two stages, namely before the application of the Think Pair Share learning model and after the application of the Think Pair Share learning model. It can be seen that the values obtained by students at the post-test stage are superior and than before the application of the Think Pair Share learning model. The research hypothesis testing is related to how much influence the application of Think Pair Share learning models to improving student learning outcomes is done through statistical tests / t test. The result, obtained Tcount = 3.64. Then compared with Ttaraf at df = n-1, df = 42-1 = 41. With a real level of α of 0.05 is 2.02, if the price of Tcount is compared to T(table). It turns out Tcount > T(table) (3.64 > 2.02). This figure shows that the Think Pair Share learning model has a positive effect on the ability to understand the subject matter of Basic Mathematics Introduction for students of the FKIP UMSU PGSD Study Program.Keywords: Think Pair Share, Basic Introduction to Mathematics

PENERAPAN STRATEGI PEMBELAJARAN INTERAKTIF DENGAN TEKNIK PEMBELAJARAN KOLABORATIF SEND-A-PROBLEM TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA KELAS IX SMP

Mathematical problem solving is a process that includes understanding problems, planning problem solving, solving problems and checking again. Writing this article aims to determine the mathematical problem solving abilities of students by applying interactive learning strategies with collaborative learning techniques a-problem and conventional learning. This study was a quasi-experimental study with a randomized subject design posttest only control group design. Data collection techniques in the form of essay tests by testing hypotheses using the t-test. The results of the hypothesis test concluded that mathematical problem solving ability with the application of interactive learning strategies with collaborative learning technique is a problem better than conventional learning.Keywords: Interactive Learning, Collaborative Techniques Send-a-Problem, Mathematical Problem Solving Ability

PENINGKATAN KEMAMPUAN BERPIKIR KRITIS MAHASISWA MELALUI METODE PENEMUAN TERBIMBING BERBANTUAN SOFTWARE GEOGEBRA PADA MATA KULIAH KALKULUS PEUBAH BANYAK DI FKIP UMSU

The purpose of this study was to find out: (1) Is the increase in mathematical critical thinking abilities of students given the guided discovery method assisted by Geogebra software higher than students who were given guided discovery method learning without Geogebra software, (2) Are their interactions between learning with students 'initial mathematical abilities towards improving students' critical thinking skills. This research is a quasi-experimental study. The population of this study is that all classes in the fourth-semester mathematics education study program are approximately 120 people. Randomly, two classes were chosen from four classes. The experimental class was treated with Geogebra assisted guided discovery methods and the control class was treated with a guided discovery method without the help of Geogebra. Data analysis was performed by analysis of two-way variance (ANAVA). The results showed (1) Improvement of mathematical critical thinking skills of groups of students who obtained guided discovery method learning using GeoGebra software was higher than the group of students who received learning through guided discovery methods without GeoGebra software. (2) There is no interaction between the learning model and the initial ability of students in improving students' critical thinking skills in mathematics.Keywords: Critical Thinking Ability, Guided Discovery Method, Geogebra

MENINGKATKAN KEMAMPUAN KOMUNIKASI MATEMATIS SISWA MELALUI MODEL PEMBELAJARAN KOOPERATIF TIPE STAD DENGAN PENDEKATAN RECIPROCAL TEACHING

This study aims to (1) improve students' mathematical communication skills through the STAD Type Cooperative Learning Model with the Reciprocal Teaching Approach in MTs Islamiyah Medan, (2) describe the process of implementing the STAD Type Cooperative Learning Model with the Reciprocal Teaching Approach at MTs Islamiyah Medan. This research is a class action research with 31 students of VII-2 MTs Islamiyah Medan subject. Instruments used include learning implementation observation sheets, mathematical communication observation sheets, and mathematical communication test questions. Implementation of the STAD Cooperative Learning Model with the Reciprocal Teaching Approach includes: (1) Initial Activities: the teacher conveys apperception and motivation regarding the material to be studied; (2) this activity: group work which includes Clarifying discussion, Predicting discussion Questioning discussion, Summarizing discussion, discussion of LKS questions, and group percentage; (3) Closing: the teacher together with students draw conclusions on the material that has been learned. After learning takes place there is an increase in students' mathematical communication skills. This can be seen from the results of observations of the implementation of learning an increase in the percentage from cycle I to cycle II amounted to 90.90% to 94.45% with a very good category of accuracy. Furthermore, the results of observations of students' mathematical abilities also increased from cycle I by 75.00% (good category) to 82.41% (good category) in the second cycle. This is in line with the results of a mathematical communication test that has increased after the second cycle, which is as many as 27 students or 64.52% of the number of students in class VII-2 has increased in total scores to good categories.Keywords: Mathematical Communication, Cooperative, STAD, Reciprocal Teaching.