Authors:Jazim Jazim, Rahmad Bustanul Anwar, Dwi Rahmawati Pages: 105 - 109 Abstract: The aim of this study was to develop a module of mathematics at the junior high school level class VIII. It is based on the observation of books or teaching materials used in schools is an informative and not involve students in the learning process. This study develops a mathematical module VIII Junior High School class-based constructivism. Constructivism approach chosen by reason will lead students in finding and independently formulate a mathematical concept. This type of research is the development of research (Research and Development), which is intended to develop modules Junior High School math class VIII-based constructivism. This research subject is class VIII student at Junior High School 2 Metro, Junior High School 4 Metro and Junior High School 6 Metro. When the study for two years in which the first year to implement the development of modules and the second year of implementing use of modules developed and seen the results of student learning. Implementation of the research in the first year has been implemented which reached the stage of expert validation and testing of the small scale of the development of junior high school math module VIII class-based constructivism PubDate: 2017-01-03 Issue No:Vol. 5, No. 2 (2017)

Authors:Ari Irawan, Gita Kencanawaty Pages: 110 - 119 Abstract: The purpose of this study to see the effect of verbal and numerical skills on critical thinking skills of mathematics, verbal ability to influence critical thinking skills of mathematics, numerical ability to influence critical thinking ability in mathematics. The method used is a survey where given a test of verbal ability, numerical kemamuan math and critical thinking skills. This research sample MIA class XI students in high schools in the city of Depok representing each district taken as many as 9 schools with a total sample of 360 respondents. Hypothesis testing using two-way ANOVA. Results of the study showed there are significant verbal and numerical ability jointly to the critical thinking skills of mathematics, there is the influence of the verbal skills of critical thinking skills matametika, there is the influence of numerical ability of the critical thinking skills of mathematics. PubDate: 2017-01-03 Issue No:Vol. 5, No. 2 (2017)

Authors:Ifada Novikasari Pages: 120 - 127 Abstract: Mathematics anxiety has been recognized as a feeling depressed and anxious when it deals with the manipulation of numbers and mathematical problem solving in the real life and the academic situations. The anxiety tend to occur in someone with low mathematical ability. That is, individuals with low mathematics anxiety more comfort to solve the problem than someone who has high anxiety. It is interesting to examine, because it will be proved whether there is a relationship between learning achievement and mathematics anxiety PubDate: 2017-01-03 Issue No:Vol. 5, No. 2 (2017)

Authors:Rukmono Budi Utomo Pages: 128 - 136 Abstract: This research is investigating ofSteepest Descent numerical method with direction and norm arithmetic mean. This research is begin with try to understand what Steepest Descent Numerical is and its algorithm. After that, we constructing the new Steepest Descent numerical method using another direction and norm called arithmetic mean. This paper also containing numerical counting examples using both of these methods and analyze them self. PubDate: 2017-01-03 Issue No:Vol. 5, No. 2 (2017)

Authors:Swaditya Rizki, Nego Linuhung Pages: 137 - 144 Abstract: This study is a research and development (R & D). The model used in this research is to adapt the development of the 4D model (Define, Design, Develop, Disseminate) developed by Thiagarajan. This study aims to generate the teaching materials based contextual and ICT are good at program linear and to determine the effectiveness of teaching materials based contextual and ICT at program linear on learning outcomes. Data collection instruments used in this study in the form of questionnaires, interviews, sheet validation, and matter. Data analysis techniques used in this research and development is a qualitative descriptive analysis technique to calculate the average, while for influence before and after treatment that uses the analysis of paired sample t-test. The conclusions obtained from the development are teaching materials based contextual and ICT are very valid and practical for use in the learning process. From the test results, it can be concluded that there is a very significant influence mathematics teaching materials based contextual and ICT on student learning outcomes. So, teaching materials based contextual and ICT is very effective for use in learning the material Program Linear PubDate: 2017-01-03 Issue No:Vol. 5, No. 2 (2017)

Authors:Nurul Farida, Nurain Suryadinata Pages: 145 - 151 Abstract: Teaching materials is one important component in learning because teaching materials can be used for independent study. On the other hand, the lack of teaching materials are on open-ended problems leads to an underdevelopment of creativity in learning. With the open-ended problems, students are expected to have more than one solution to solve problems in everyday life, especially in mathematical problem solving. The purpose of this study is to develop teaching materials based on open-ended valildly, practically and effectively in the subject of linear algebra. This research is the development by using Plomp models which consists of three stages: preliminary research, prototyping, and assessment. Data collection technique through observation, questionnaires and tests. The instruments used were observation sheet, questionnaire sheet and a test sheet. Based on result of the research that has been done shows that the teaching materials is based on open-ended in the subject linear algebra that have been developed otherwise valid with a value of 3.43, practice with a value 3,11 or in the percentage reached 77,75%, and effective with value of learning outcomes experiment class (use teaching materials developed) higher than control class. PubDate: 2017-01-03 Issue No:Vol. 5, No. 2 (2017)

Authors:Rina Agustina, Ira Vahlia Pages: 152 - 160 Abstract: Teaching materials are needed for students to support the lecture. The purpose of this study was to determine how to develop problem-based teaching materials on the subjects of mathematical economics mathematics education courses. This research was conducted at the University of Muhammadiyah Metro by selecting a student of mathematics education as a research subject.This study is a research development. The method used as follows: (1) research and information gathering, (2) planning, (3) product development, (4) the initial trials, (5) product revision, (6) the field trials, (7) the revised product field trials, (8) the operational testing of products, (9) the revision of the product and (10) the implementation and dissemination. To obtain problem-based teaching materials will be validated teaching materials by 2 experts math education materials and one person linguists. The achievement of this research is problem-based teaching materials that can support economic mathematics lectures. The achievement that will be produced is ≥ 50% students of mathematics education are getting the optimal learning course on the math economy. Based on the results of questionnaires percentage obtained validation criteria of 80% of teaching materials and meet the criteria are valid for. PubDate: 2017-01-03 Issue No:Vol. 5, No. 2 (2017)

Authors:Satrio Wicaksono Sudarman Pages: 161 - 171 Abstract: This study is intended to determine problemtika types of errors in math story problem solving in elementary school student. This type of research is descriptive qualitative research. In a descriptive study is essentially a method used to find specific data and the reality of what happened in the community at a particular time. To find the errors do math word problems can be analyzed on a step by step process of the students completed the test questions were given. in some cases comprehension students about about the story on which this study, students' difficulties phrased sentence of math word problems, difficulty in terms of actual in description story for students in the following ways; (1) Students with lower language understanding, it is very difficult to digest towards the goal of every sentence in the matter of the story. Going where and what to do with the sense of the question is very vague and unclear. So the mindset of students just spinning on the same premises. (2) The concept is not yet strong prerequisite for solving problems related to the concept of prerequisite PubDate: 2017-01-03 Issue No:Vol. 5, No. 2 (2017)

Authors:Sutrisni Andayani Pages: 172 - 179 Abstract: This research objectives to determine whether the use of learning strategies of Reciprocal Teaching can improve students' critical thinking skills and learning outcomes in the real analysis I material. This research is Classroom Action Research using Reciprocal Teaching with four key activities, namely questioning, clarifying, predicting, and summarizing/review, with the stages include: planning, implementation, monitoring and reflection carried out in two cycles. This research was carried out on the mathematics education at the Muhammadiyah University of Metro, Lampung. The technique of collecting data through observation, questionnaires, interviews, and tests. The results of critical thinking skills increase of 32.3 from the prior cycle by 45.7 becomes 78.0 at the end of the cycle. Learning outcomes increase at 33.4 (3.21 pretest and posttest 65.5) in the first cycle and 37.0 (35.4 pretest and posttest 72.4) in the second cycle. Therefore, this research can be concluded that Reciprocal Teaching Model can improve the students' critical thinking skills and learning outcomes PubDate: 2017-01-03 Issue No:Vol. 5, No. 2 (2017)

Authors:Sumbogo B M Pages: 180 - 186 Abstract: This research is a class action (classroom action research). The aims this research is to determine whether the use of CD learning about triangles and rectangles can increase the activity of students and student learning outcomes class VII.7 SMP Negeri 1 Banjar Margo in the academic year 2015/2016. Based on the analysis, obtained an average student activity before the action amounted to 42.53%, the average student activity first cycle of 65.33% and the average student activity cycle II 74.00%. Means the average activity of students has increased by 15.7%. The average results of student learning the first cycle of 56.7 and an average student learning outcomes cycle II of 65.3, an average of learning outcomes increased by 15.2%. Before remedial many students who pass the study in the first cycle of 16 students (53.3%), it increased 5 students (16.7%) from the prior action. And the second cycle students who pass the study were 21 students (70.0%), it increased 5 students (16.7%) of the cycle I. Based on the results of classroom action research conducted and the discussions that have been described, it can be concluded that the use of CD Lesson in Math learning materials triangles and rectangles can increase the activity and student learning outcomes VII.1 grade SMPN 1 Banjar Margo, Tulang Bawang in the academic year 2015/2016. PubDate: 2017-01-03 Issue No:Vol. 5, No. 2 (2017)