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Wamington . Rajagukguk
Unimed Medan
Education Mathematics Social Sciences Other

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MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH DENGAN PEMBELAJARAN KOOPERATIF TIPE STUDENT TEAM ACHIEVEMENT DIVISION Damayanti Kusuma Wardhani; Wamington . Rajagukguk
INSPIRATIF : JURNAL PENDIDIKAN MATEMATIKA Vol 1, No 1 (2015): Inspiratif : Jurnal Pendidikan Matematika
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (442.238 KB) | DOI: 10.24114/jpmi.v1i1.8913

Abstract

AbstractThis study aims to improve students' problem-solving abilities with STAD cooperative learning model on the subject of integers class VII SMP Negeri 3 Galang. This type of  research is a classroom action research. The subjects were students of class VII-1 SMP Negeri 3 Assemble TA2014/2015 which amounted to28 students. The object of  this study is an effort to improve the ability of mathematical problem solving through cooperative learning model Student Team Achievement Division(STAD) on the subject of Integer. The research instrument used is the observation and mathematical problem solving ability test.  From the results of problem solving ability test, the data obtained were 9 students (32.14%), which reached the criteria of problem-solving abilities. After being given the treatment by applying the learning model STAD (first cycle), it is provided TKPMI .From the TKPMI data showed that as many as16students(57.14%) of the28students(2.74 value) that reaches criteria problem-solving abilities. This shows that in the first cycle of mathematical problem solving ability of students as a whole h as not reached 85%, the continued action on the second cycle. From the results TKPMII data showed that as many as 24 students (85.71%) of  the 28 students (3.15 value) that reaches criteria problem-solving abilities. This shows that the mathematical problem solving ability of students as a whole has reached 85%, then the action is stopped. Based on t he above results, it can be concluded that by applying STAD cooperative learning model can improve students' mathematical problem solving ability on the subject of integers in class VII SMP Negeri 3Galang.Keywords: STAD, improve, test, problem, solving
PENGARUH PENGGUNAAN MODEL PEMBELAJARAN KOOPERATIF TIPE NUMBER HEAD TOGETHER DENGAN PENDEKATAN BERBASIS MASALAH TERHADAP KEMAMPUAN SISWA DALAM PEMECAHAN MASALAH PERBANDINGAN Wamington . Rajagukguk
INSPIRATIF : JURNAL PENDIDIKAN MATEMATIKA Vol 2, No 1 (2016): Inspiratif: Jurnal Pendidikan Matematika
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (559.794 KB) | DOI: 10.24114/jpmi.v2i1.8930

Abstract

ABSTRACTThe main problem of this study was the lack of ability in problem solving of junior high school (SMP) students about Comparison. To improve this ability, it was used the cooperative learning model of Number Head Together (NHT) type with approaching of problem based learning. The problem formulations would be studied in this study namely: Whether the cooperative learning model of NHT type with approaching of problem based learning influenced the students' skills in problem solving of comparison lesson. For the purposes of this study were to: (1) describe the implementation of cooperative learning model of NHT type with approaching of problem based learning; (2) describe an improvement in problem solving ability of students in comparison taught by using cooperative learning model of NHT type and approaching of problem based learning. Design of this study was two-group pretest-posttest design. The population was all students of class VII SUMBUL. Ability of mathematical problem solving of students was measured by using test of ability of problem solving. But looking for quality of the improvement obtained from two groups was conducted by testing on the index gain. The result of study showed that the ability of mathematical problem solving between students who were taught by using cooperative learning model of NHT type with approaching of problem based learning was higher than students who were taught just by problem based learning. It showed that there was the influence of cooperative learning model of NHT type with approaching of problem based learning to ability of mathematical problem solving. Based on the result of this study, it was suggested that teachers taught the mathematical problem solving by using cooperative learning model of NHT type with approaching of problem based learning.Key Words: Cooperative Learning Model of NHT Type; Approaching of Problem Based Learning; Ability of Problem Solving.
Co-Authors Damayanti Kusuma Wardhani