Mauli Lamhot Simanjuntak

Mauli Lamhot Simanjuntak. 081188830012. Upaya improving SMP Ability Students Solve Math Problems With Applying the theory of Vygotsky And Combination Bruner. Tesis Mathematics Education Program Post-Graduate Studies,State University of Medan.2010.

Research objectives are: (1) to determine whether the increased ability of students to solve mathematical problems by applying the theory of Vygotsky and Bruner, (2) to describe the activities of students in learning math solve problems by applying the theory of Vygotsky and Bruner blend, (3) to describe the level of ability Mathematics teachers in managing learning by applying the unification theory of Vygotsky and Bruner, (4) to study the response of students in solving math problems. The subjects were students of Class VII of SMP Negeri 2 Balige TP 2009/2010.Objek fusion research is the application of Vygotsky and Bruner's theory as an attempt to improve students' abilities to solve mathematical problems and methods to be applied to problems tersebut.Instrumen research to measure the ability students use mathematics to solve problems shaped the description with the number of tests as many as six points with a coefficient realibitas matter, to know the student activity sheets used pengamatan.Untuk know the level of teacher proficiency in learning to use the observation sheet. The research results obtained: (1) Increasing the value of the average results of tests students' ability to solve classical problems of Cycle I to Cycle II for 12.98%, (2) Overall percentage of student activity in each component of learning to solve problems from first cycle to cycle II increased by 3.58%, (3) the ability of teachers in managing learning from Cycle I to Cycle II increased by 0.51, (4) percentage of student responses to learning activities in the first cycle and second cycle menigkat sebasar 2.99%. From the results of data analysis concluded that: (1) unification theory of Vygotsky and Bruner can enhance students 'abilities to solve problems on the subject of comparison, (2) unification theory of Vygotsky and Bruner can increase the activity of students in solving mathematical problems, (3) teachers' ability to manage learning was the good category, (4) students' response to all the learning activities are positive.

Fakhruddin

Fakhruddin, 07118830012. Increasing Problem Solving Ability and Communication Mathematics Through Problem Based Learning with Co-operative Approach. Thesis Mathematics Education Graduate Program, State University of Medan. 2010.

Research objectives are: (1) To know the difference between problem-solving abilities of students with problem-based learning approach STAD cooperative type of learning compared with conventional (regular) review of the whole student. (2) To know the difference between problem-solving abilities of students with problem-based learning approach STAD cooperative type of learning compared with conventional (regular) if it is based on the accreditation of the school (very good, good, enough). (3) To determine differences in communication skills between students who are learning math problem based approach STAD cooperative type of learning compared with conventional (regular) review of the whole student. (4) To determine differences in communication skills between students who are learning math problem based approach STAD cooperative type of learning compared with conventional (regular) if it is based on the accreditation of the school (very good, good, enough). (5) a comprehensive review of the performance and the pattern of answers that the students make in solving contextual problems in each approach.
Of the study was eksprimen. The subject of this research is in the County Junior High School students shavings, class VII is based on the level of accreditation the school is very good, good enough for school accreditation and a very good first elected to junior Range N, both junior high school accreditation N 3 Island Folk and junior high schools akteditasi enough N 2 Aek Kuasan in Academic Year 2009/2010, with the number of students from the junior class eksprimen N 1 Range 38 people 38 people controlling class, students from junior high school class of N 3 eksprimen Island People 38 people 39 people control classes, students from the junior class eksprimen N 2 Aek Kuasan 48 people 40 people classroom control. The object of this research is problem based learning through cooperative approaches on the material type STAD comparison. The research data obtained from initial test and final test of problem-solving ability and communication skills of mathematics, the observation of teachers and students, the diversity and the pattern of answers given by students.
In this study, the average gain is the ability to problem-solving approach STAD cooperative type of accreditation is very good at the level higher than usual learning is 0.40483 and 0.31768, both at the level of accreditation is higher than usual learning is 0.29405 and 0.26149, at the level of accreditation is higher than usual learning is 0.23770 and 0.22013.Similarly, the results of a study of overall students that problem solving ability of learning koopertif STAD type of learning is better than usual. The mean gain of mathematics communication with type STAD cooperative approaches at very good levels of accreditation is higher than usual learning is 0.43077 and 0.34297, both at the level of accreditation is higher than usual learning is 0.36728 and 0.28999, at the level of accreditation quite higher than usual learning is 0.33299 and 0.21622. Similarly, the results of a study of the overall student that learning communication skills in mathematics from STAD koopertif type of learning is better than usual. Likewise, the performance and the pattern of answers given by students in solving math problems and there are also differences in communication Based on the description above, this study suggests. (1) Study by using problem-based learning through cooperative approaches can be utilized to determine peguasaan student teachers to the concepts being studied in order to do enrichment action. (2) Study by using problem-based learning through cooperative approach is potentially applicable in the learning of mathematics in an effort to improve the quality of mathematics education at basic education level. (3) Teachers should create a learning atmosphere which give more opportunities for students to express ideas in mathematics problem solving and communication in their own way so that in their mathematics learning more boldly argues, are more confident, creative. Teachers can learn from the diverse representation provided students in developing and expanding their knowledge. (4) problem-based learning is still not known teachers and students as a whole, therefore we need to be socialized by institutions like the District Education Office or Province in hopes of improving students' abilities in mathematical problem solving and communication that will ultimately improve student learning outcomes. (5) For all parties interested in education as, hopefully this research can make a positive contribution to the realm of education, as well as one of the benefits refrensi in an effort to improve the quality learning outcomes students. (6) For all those who become researchers, it is suggested to be able to further develop this research through relevant research such as the ability of students to connect mathematics problem-based learning. (7) The population in this study is limited to students of junior secondary school level it is necessary to do research on higher levels of schooling to see the impact of problem based learning through cooperative learning type STAD.

Keywords: Problem Solving Ability, Communication in Mathematics and Problem Based Learning.

Cut Latifah Zahari

Cut Latifah Zahari, NIM 07118830006. Improving Communication and Understanding Mathematics Ability of Students with Media Autograph grade students in private high school science XII Istiqlal Delitua TA. 2009/2010. Thesis Mathematics Education Graduate Program, State University of Medan. 2010.

Research objectives are: (1) Determine the level of communication skills math students by using media autographs, (2) Determine the level of student understanding of mathematics using the media autographs and (3) Describe the students' responses to learning activities using the media autographs.
Type of research is the Classroom Action Research (CAR). Subjects were high school students Delitua Private Istiqlal, the class XII Science Program in Academic Year 2009 / 2010 with the number of students as many as 29 students, consisting of 10 male students and 19 female students with heterogeneous ability levels. The object of research is the use of media autographs on integral material (counting area). Data was obtained from the initial and final test on communication skills and understanding of mathematics, teacher observations and student and student questionnaire responses.
This study consisted of two cycles. Each cycle spent four meetings. Starting from January 13, 2010 until February 13, 2010. The result is (1) autographs media use can increase students' mathematical communication skills, (2) The use of media can enhance the ability of autographs and student understanding of mathematics, (3) the use of the media can alter the response autographs students towards learning mathematics yag either direction (positive). From the results of initial tests of mathematics communication skills average value = 54.14 and the first test the ability of understanding math average score = 33.1. Average scores in mathematics communication end = 65.69 and for the ability of understanding math = 74.83. hasil tes siklus I adalah 62.4 atau 52% dan siklus II adalah 74.1 atau 90%. test results of the first cycle is 62.4 or 52%, and the second cycle is 74.1 or 90%. Based on the above conclusion, this study suggests (a) the learning of mathematics using autographs media can improve communication skills and understanding of mathematics students, (b) autograph can enhance learning by students learning activities so that students' responses to the learning of mathematics for the better.

Keywords: Communication of Mathematics, Mathematical Understanding, And Autograph Media

Cut Latifah Zahari

Cut Latifah Zahari, 07118830006. Improving Communication and Understanding Mathematics Ability of Students with Media Autograph grade students in private high school science XII Istiqlal Delitua TA. 2009/2010. Thesis Mathematics Education Graduate Program, State University of Medan. 2010.
Research objectives are: (1) Determine the level of communication skills math students by using media autographs, (2) Determine the level of student understanding of mathematics using the media autographs and (3) Describe the students' responses to learning activities using the media autographs.
Type of research is the Classroom Action Research (CAR). Subjects were high school students Delitua Private Istiqlal, the class XII Science Program in Academic Year 2009 / 2010 with the number of students as many as 29 students, consisting of 10 male students and 19 female students with heterogeneous ability levels. The object of research is the use of media autographs on integral material (counting area). Data was obtained from the initial and final test on communication skills and understanding of mathematics, teacher observations and student and student questionnaire responses.
This study consisted of two cycles. Each cycle spent four meetings. Starting from January 13, 2010 until February 13, 2010. The result is (1) autographs media use can increase students' mathematical communication skills, (2) The use of media can enhance the ability of autographs and student understanding of mathematics, (3) the use of the media can alter the response autographs students towards learning mathematics yag either direction (positive). From the results of initial tests of mathematics communication skills average value = 54.14 and the first test the ability of understanding math average score = 33.1. Average scores in mathematics communication end = 65.69 and for the ability of understanding math = 74.83. hasil tes siklus I adalah 62.4 atau 52% dan siklus II adalah 74.1 atau 90%. test results of the first cycle is 62.4 or 52%, and the second cycle is 74.1 or 90%.
Based on the above conclusion, this study suggests (a) the learning of mathematics using autographs media can improve communication skills and understanding of mathematics students, (b) autograph can enhance learning by students learning activities so that students' responses to the learning of mathematics for the better.

Keywords: Communication of Mathematics, Mathematical Understanding, And Autograph Media

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Mangihut Situmorang

Mangihut Situmorang 071188830019. An Analysis of Interaction and Mathematical Communication of High School Student in Jigsaw Cooperative Learning.

This research is intended to dig student’s activity in Cooperative learning, in which focused on student’s personal activity in making task.
The Population of this research is the students of social field of study in Pematang Siantar year 2009/2010. The sample is taken randomly which than applied the cooperative learning jigsaw type.
The instrument that is used, is instrument of observation with reliability 0,91 and test instrument with reliability 0,86, and significant standard 0,05.
Along the learning process it is found (1) the result of student’s activity along the learning process (Cumulative data), (2) Student’s Mathematic Communication competence ability after learning (Cuantative data)
It is found in qualitative analysis a general form of student’s interaction in making task, namely such interaction in discussion type in order to find the idea of solution of task or negotiation to decide the group answer. In the other hand the student’s interaction based on academic ability are: (1) A high ability student’s interact with a medium ability in order to help with explanation.; (2) a high ability student’s interact with a low ability student in order to help without explanation; (3) a medium ability student’s interact with a low ability student in order to help with explanation.
The analysis result in cuantitative research found student’s mean 68, 97. Many students have been able to communicate mathematic about 85%, and classically to do it.
Based on the result of this research, so learning process in school has been properly in student center, the teacher has to admit that the students have ability that can be dug by them selves. Therefore, jigsaw cooperative learning is very good applied as mathematic learning alternative at school.