IMPROVING MATHEMATIC CONNECTION AND COMMUNICATION CAPABILITY AND SELF-CONCEPT OF VOCATIONAL SCHOOL STUDENTS THROUGH THE SAINTIFIC APPROACH TO THE SETTINGS OF JIGSAW COOPERATIVE LEARNING MODELS

This research was aimed at examining the improving mathematical connection and communication ability and self-concept of vocational students through cooperative learning of jigsaw so that they were able to be more motivated in learning mathematics, more understanding mathematics learning itself and to apply it in everyday life. This research method was a quasi-pretest-posttest experiment that applied a jigsaw cooperative learning model. This study involved two groups of students who studied about mathematical connection and communication skills and students' self-concepts. The instruments used were in the form of mathematical connection and communication skills, as well as student self-concept questionnaires. The research instruments were firstly tested for validity (logical and empirical), reliability, distinguishing features and the level of difficulty of the questions. The achievement of mathematical connections and communication skills and the self-concept of students who got learning with a scientific approach to the type of cooperative learning model jigsaw was better than students who only learned the scientific approach. In this study there was also an association between the ability of connections with mathematical communication of students in the high category. There was an association between the ability of connections with students' self-concepts in the high category. There was an association between mathematical communication skills and students' self-concepts in the high category.

The Correlation Habit of Mind Mathematics and Mathematical-Problem Solving Ability On The Subject Two-Dimensional Figure

This research already existed before, but this research is different. The purpose of this study is to identify whether there is a positive correlation between habit of mind mathematics and mathematical problem solving abilities of students on the subject two-dimensional figure. This research is classified as quantitative correlational research. The population in this study were all seventh grade students at MTs. Negeri Sumedang 2016/2017 academic year. The sample is class VII D students with purposive sampling technique. The test instrument was a test of mathematical problem solving ability and a mathematical habit of mind attitude scale. The technical data analysis uses simple linear regression analysis. The results of this study are that there is a positive correlation between habit of mind mathematics and mathematical problem solving abilities for middle school students.

IMPROVING CRITICAL THINKING ABILITY AND MATHEMATICAL DISPOSITION OF HIGH SCHOOL STUDENTS THROUGH INTEGRATED SAINTIFIC APPROACH TO BRAIN BASED LEARNING

The purpose of this study was to examine the problem of achievement and improved critical thinking skills and dispositions mathematical high school students between those who use the scientific approach to integrating brain based learning with a scientific approach , examining the association between variablesand an overview of student performance. This study is an experimental study with a design pretest-posttest design. Sampling in this study using purposive sampling technique . The instruments used were tests and non-tests , the test instruments included tests of mathematical critical thinking skills while the non-test included attitude scale tests Student mathematical disposition . The results showed that the achievement and improvement of critical thinking skills (CTS) with a scientific approach to integrating Brain-based Learning (SAIBBL) better than class with scientific approach (SA). Mathematical Disposition (MD) student in the classroom with using learning (SAIBBL) better than students in class with SA. There is a strong association between CTS and MD . The overall picture of student performance with SAIBBL is superior and students are more active in learning. These results prove that the use of SAIBBL is better than SAI.

ATTEMPTS TO IMPROVE THE MATHEMATICAL COMMUNICATION SKILLS OF CLASS VB STUDENTS OF SDN 074 AYUDIA KOTA BANDUNG IN DATA PROCESSING MATERIALS THROUGH THE TUTOR-ASSISTED SCIENTIFIC APPROACH

This research is motivated by the low mathematical communication skills of elementary school students who need a learning approach to overcome these problems. The alternative approach used is a scientific approach to peer tutoring. This study aims to examine whether the mathematical communication skills of students who use scientific learning are better than those who use ordinary learning to be reviewed from each stage of the cycle. The research method used is a qualitative method in the form of Classroom Action Research (CAR). In each cycle, learning is given first and then given a test. The population in this study were students of SDN 074 Ayudia Kota Bandung class V, while the sample was VB class. Data collection in this study is in the form of tests in each cycle, then the score data of mathematical communication skills are analyzed by descriptive statistics. Based on the results of the study, the authors concluded that students' mathematical communication skills increased from one cycle to the next.

THE ROLE OF COGNITIVE STAGE TOWARD STUDENTS MATHEMATICAL CREATIVE THINKING AND HABITS OF MIND

The purpose of this survey is to examine the role of cognitive stage toward his or her attaiment of mathematical creative thinking (MCT) and habits of mind (HoM) grounded on student’s cognitive stage. The survey concerned with 36 eleventh grade students of 16.25 years old, test of logical thinking (TOLT), an essay MCT test, and a MSC scale. Data analysis covered: calculation of item scoring of HoM scale; percentage enumeration, Mann-Whitney testing for mean difference, of association between two variables, and other rational analysis relevant to the findings. By using TOLT, the survey found that 44% students’ were still at concrete operational stage, few students 19% at transition operational stage, and 36% students had reached at formal operational stage; in entirely, students’ MCT was at low grade level and students’ HoM was at fairly good grade level. Even if, according to cognitive stage, formal students, transition students, and concrete students survey detected successively at medium, low and very low grade level. In line with that findings, formal students realized few difficulties, transition students experienced some more difficulties and concrete students realized difficulties in all items of MCT tasks. In the contrary, either in entirely or according to cognitive stage there were no different grade of MSC among them, and those grades were at fairly good level. The other findings there was high associtaion between cognitive stage and MCT, but no association between cognitive stage and MSC and between MSC and HoM.

CONTRIBUTION OF DISCOVERY LEARNING AND PEER TEACHING ON STUDENT’S MATHEMATICAL CRITICAL THINKING AND SELF CONFIDENT

The purpose of this experiment was to analyze contribution of discovery learning and peer teaching (DL-PT) on student’s mathematical critical thinking (MCT) and self confident (MSC). The experimental took pretest-postest control group design and involved 72 eleventh grade students, a MCT test, a MSC scale, and perception on DL-PT and on DL scales . The study found that on MCT and its N Gain, students getting treatment with DL-PT attained better grade than students taught by DL alone; even if both student’s grades were at medium level, and students realized difficulties on examining the truth of enumeration process and on proving problem. On MSC, there was no different student’s grades between students taught by DL-PT and by DL alone and those grades were at medium level. In addition, there was no association between MCT and SCM, students learned actively during DL-PT and DL and students performed positive opinion on DL-PT and on DL

Through A Scientific Approach by Using Problem Solving to Improve The Ability of Mathematical Understanding of Vocanational Students

This research is a research through a scientific approach by using problem solving to improve the understanding of mathematical abilities of vocational students. This research is a quasi-experimental form the which aims to test the achievement and improvement of students' understanding of mathematical skills through a scientific approach, using problem solving rather than learning that only uses a scientific approach. And examine the implementation of learning steps through a scientific approach, using problem solving. The population in this study were all students of class X Vocational School in Bandung Regency, while the sample was class X students from one of the Vocational Schools roomates were determined purposively and were randomly selected from the existing class X. Based on the results of the data analysis, it was concluded that the achievement and improvement of the understanding of mathematical abilities of Vocational students who learning Obtained through the scientific approach, using problem solving was better than Reviews those who Obtained using the scientific approach learning only. And the implementation of learning through a scientific approach, using problem solving is Carried out in accordance with the planned learning steps

Mathematical Reasoning and Self Regulated Learning According to Student’s Cognitive Stage

This study was a descriptive survey having a goal to examine attainment of student’s mathematical reasoning (MR) and self regulated learning(SRL) according to student’s cognitive stage. The survey implicate 36 eleventh grade students of 17... years old, test of logical thinking (TOLT), an essay MR test,a SRL scale. By using TOLT, the survey investigated many students with 17 years old had not reached formal cognitive stage, namely 19 % students at formal stage, 25 % students at transition stage, and rest 56% students at concrete stage. In addition, survey invented that entirely students obtained MR at very low grade level, and according to student’s cognitive stage, formal students obtained higher grade MR than the grade of transisiton students and concrete students. Even if, those grades were still at low and very low level. Either entirely or based on student’s cognitive stage there were no different grades on student’s SRL and those grade were fairly good level. SRL at fairly good grade level, transistion stage students attained MR and SRL at medium grade Other finding, there was medium association between cognitive stage and MR, but therewere no association between cognitive stage and MR, and SRL and between MR and SRL. In general, these findings were, that in normal condition formal cgnitive stage will reach by students in 12 -13 years old, or in 13-14 years old, even in specific condition in 19 – 20 years old; and that formal students possess higher abilities than concrete students on completing HOT tasks such as MR tasks which needed formal operational thinking.

Discovery Learning Model and Props of Statistical Kenik In Improving The Mathematical Communication Ability of Junior High School Students

The purpose of this study is to examine the achievement and improvement of junior high school students' mathematical communication ability using discovery learning models and props of statistical kenik compared to students who use ordinary learning, and student activities during learning using discovery learning models and props of statistical kenik to take place. This study used a quasi-experimental design. The experimental group obtained learning with discovery learning models and props of statistical kenik and control groups obtained regular learning. The instrument used was a test of mathematical communication ability. The population in this study were all eighth grade students of SMP Negeri 2 Cilamaya Kulon Karawang. With the sample subjects were eighth grade students as many as two classes from the five existing classes randomly selected. The results of this study are: (1) There is achievement and improvement of mathematical communication ability between students whose learning uses discovery learning models and props of statistical kenik compared to students who use ordinary learning; (2) Learning by using discovery learning models and visual aids shows that the learning process is more effective in mathematical problems solving and students can find statistical material concepts.

ANALYSIS OF MATHEMATICAL COMMUNICATION ABILITY AND SELF REGULATED LEARNING MATHEMATICS STUDENT’S OF CLASS IX SMP NEGERI 2 CILAMAYA KULON

This study aims to determine mathematical communication ability and self-regulated learning mathematics of IX grade students of SMP Negeri 2 Cilamaya Kulon Karawang on circle material and circle tangents. This research is a qualitative descriptive study, where the object of research is class IX students as many as 35 students. This research was conducted on November 20, 2018. The research technique was in the form of a test of 6 items test questions of mathematical and non-test communication ability in the form of a questionnaire with 40 items of self regulated learning mathematical statements and interviews. The results of this study are mathematical communication ability of students classified as moderate with a reliability coefficient of 0.9793 (very high category), having a mean difficulty index of 0.539 (medium category), and a mean differentiation of 0.485 (good category). Student constraints when working on mathematical communication problems on circle material and tangent circle are students who are less able to analyze the core of the problem, students do not understand the form of non-routine questions (mathematical communication), students are confused in determining completion strategies, students cannot visualization, students do not know the terms in mathematics, as well as procedural errors in progress. While for self regulated mathematics students have a good category.