E. Elvis Napitupulu, E. Elvis
State University of Medan

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Cultivating Upper Secondary Students Mathematical Reasoning-Ability and Attitude towards Mathematics Through Problem-Based Learning Napitupulu, E. Elvis; Suryadi, Didi; Kusumah, Yaya S.
Journal on Mathematics Education Vol 7, No 2 (2016)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.7.2.3542.117-128

Abstract

This paper reports some results of a research attempted to cultivate students mathematical reasoning ability (MRA) by means of implementing problem-based learning (PBL) model. The population was upper secondary students of public schools in Bandung. Cluster sampling technique applied to take sample of amount 158 students from middle-level schools. Data were teachers assessment on students’ performance in last two months, prior mathematical knowledge (PMK) and MRA test, observations, and interview. Two-factors ANOVA then used to analyze the data. Findings showed that overall students in PBL-classroom achieved better MRA than their counterparts in conventional one though the category in both classrooms was low. Interaction between PBL and PMK factor towards MRA did not emerge. Most part of the participants viewed PBL neither positive nor negative. On the contrary, they assessed that the tasks given made and demanded them thinking and learning more actively than ever. The findings showed adopting PBL in schools to facilitate students getting their higher order thinking skills is a reasonable choice, especially schools having middle or high ability students.Keywords: problem-based learning (PBL), mathematical reasoning ability 
Mengembangkan Kemampuan Menalar dan Memecahkan Masalah melalui Pembelajaran Berbasis Masalah (PBM) Napitupulu, E. Elvis
PARADIKMA JURNAL PENDIDIKAN MATEMATIKA Vol 1, No 1 (2008): PARADIKMA JURNAL PENDIDIKAN MATEMATIKA
Publisher : PARADIKMA JURNAL PENDIDIKAN MATEMATIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (639.138 KB)

Abstract

Two of the five goals mandated by SBC to be achieved in the learning of mathematics in schools is to develop the ability to reason and solve problems. In addition to SBC also emphasizes math learning focus on solving problems. Reasoning and problem solving competence is a two occupying a central position in their respective roles. Reasoning ability is the main weapon to solve the problem while solving the problem is the main occupation in doing-math. For that it is a usual school curriculum models adopted to design and make room for math learning approach that promotes growth and blossoms both capacities. This paper highlights the importance of foster both competence is developed through the learning process in order to contribute to efforts to achieve national education goals.
The Difference of Students’ Mathematical Communication Ability Taught by Cooperative Learning Model Think Talk Write Type and Numbered Head Together Type Siahaan, Meiva Marthaulina Lestari; Napitupulu, E. Elvis
Scholaria: Jurnal Pendidikan dan Kebudayaan Vol 8 No 3 (2018)
Publisher : Program Studi Pendidikan Guru Sekolah Dasar, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (667.674 KB) | DOI: 10.24246/j.js.2018.v8.i3.p231-242

Abstract

The purpose of this research was to know there was any difference in student’s mathematical communication ability in cooperative learning Think TalkWrite (TTW) type and Numbered Head Together (NHT) type. The population was all students at SMP Negeri 1 Lubuk Pakam. The sample was two classes which each consist of 36 students, VII A as experimental class I which taught by TTW and VII B as experimental class II which taught by NHT. The sample was taken by cluster random sampling. Collecting data technique of this research was mathematical comunication ability essay test that was given in the end of learning either in experimental class I or experimental class II. From the data analysis of each of experimental class were obtained that the average of posttest score in TTW classroom was higher than in NHT classroom. It was also obtained that score of mathematical communication indicators in TTW classroom was higher than in NHT classroom. From the data analysis of posttest score by using t-test with significance level α = 0.05, it was obtained that tcount = 4.687 and ttable = 1.667. It means that tcount > ttable then H0 was rejected and Ha was accepted. So, it can be concluded that there was difference of student’s mathematical communication ability who taught by cooperative learning model type TTW with NHT at SMP Negeri 1 Lubuk Pakam.
PENGEMBANGAN MEDIA PEMBELAJARAN DENGAN MENGGUNAKAN ADOBE FLASH UNTUK MENINGKATKAN HASIL BELAJAR PADA MATA PELAJARAN IPA KELAS V SD N 050660 KWALA BINGAI Prasetyo, Gihari Eko; Sudrajat, Ajad; Napitupulu, E. Elvis
JURNAL TEMATIK Vol 8, No 2 (2018): JURNAL TEMATIK
Publisher : JURNAL TEMATIK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (579.068 KB) | DOI: 10.24114/jt.v8i2.12618

Abstract

This study aims to produce learning media using Adobe Flash on science subjects in class V 050660 Public Elementary School Kwala Bingai that meet the criteria of valid, practical and effective. This research refers to the 4-D model. The findings of the research are: 1) learning devices produced, in the form of: CD-shaped Learning Media has met the criteria for good / valid; 2) the effectiveness of learning devices is concluded based on the post-test results of students in the first trial the percentage of classical completeness was 86% with 30 students or 88% declared complete. And 4 students or 12% were declared incomplete. 3) Practicality of learning media for students is concluded based on teacher responses and student responses; (i) student responses to learning media in the first trial amounting to 82.36% of students stated that the media was practical, (ii) response (ii) teacher response to learning media in the first trial reached 91.67% included in the very practical category. Assessment of student learning outcomes based on the pretest and posttest was analyzed using N-Gain obtained by the average value of gain of 0.7 where in the high category.