36 research outputs found
Student's Understanding of Graph Based on Information-Processing
No full textThis study is a preliminary research on how students understand patterns. Students' understanding of something is a cognitive phenomenon as, according to information processing perspective, an integral part of the stimulus, receiving, encoding, storing and retrieving information. This paper aims to describe the information processing by students when they interpret the graph as a task that was delivered using takjil context. There are 9 seven graders aged 11-12 years in various mathematics ability that three students in each its category high, mid and low. It was found that: (1) The graph given in the task attract students' attention with various reasons. (2) The level of abstraction and processing is in accordance with students' mathematical abilities. (3) The number of words related to the context activated at certain period was determined by reviews of their experiences with similar contexts. (4) Concepts of a new schemes were not solely determined by the students' mathematical abilities. Broadly, this study recommends students to have learning experiences through varying contexts and gain extensive experiences to develop appropriate and useful cognitive schemes for solving problems. How to CiteMampouw, H. L., Lukito, A., & Suwarsono, S. (2016). Student's Understanding of Graph Based on Information-Processing. International Journal of Active Learning, 1(1). </p
EKSTRAK DAUN KALIANDRA SEBAGAI INHIBITOR ALAMI LAJU KOROSI ST-37
No full textThe utilization of natural resources as a metal inhibitor is widely researched. The extract of Calliandra leaves is one of the natural resources utilized to prevent the corrosion rate. It contains high tannins, which is a natural compound that can be utilized as an inhibitor of the corrosion rate. The research is aimed to find out the efficiency of Calliandra leaves extract as the natural inhibitor for steel ST-37. The experiment method is applied to vary the extract of Calliandra leaves in the corrosive medium. Meanwhile, the extraction of Calliandra leaves uses the maceration method. The extraction of Calliandra leaves with the solvent uses an evaporation process using a rotary vacuum evaporator. The extract used as the inhibitor is determined in 5%, 10%, and 20% of concentrations. The sample test of corrosion used is steel ST-37 with 4 × 4 cm of dimension and 0.2 cm of thickness. The best inhibition efficiency is 99.73% with an inhibition concentration of 20% in HCl. It shows that the extract of Calliandra leaves works well as an inhibitor, and it is efficient to inhibit the corrosion rate
PENDIDIKAN KARAKTER SECARA UMUM DAN PADA PEMBELAJARAN MATEMATIKA DI SMA SANTO YOSEF PANGKALPINANG
No full textPeningkatan keterampilan menyelesaikan soal cerita matematika menggunakan media kartu kerja pada siswa kelas II B SDN Bareng II Kecamatan Bareng Kabupaten Jombang tahun pelajaran 2008/2009
No full textUnderstanding Profile From the Philosophy, Principles, and Characteristics of Rme
No full textThe aim of this study is to create understanding profiles of elementary school teachers who have been and have not been following the workshop PMRI, before and after they learned the learning resource about philosophy, principles, and characteristics of realistic mathematics approach. This type of research used in this study is a combination of qualitative research and developmental research. The results shown in this paper is the understanding profile of onesubject who is an elementary school teacher. Research subjects involved in the trial for the first task, the learning resource, and second task are six persons, which consists of three PGSD students who are working on the final project, and three elementary school teachers
BAHAN BELAJAR SISWA UNTUK SIKLUS KEDUA PENGEMBANGAN PEMBELAJARAN PECAHAN DI KELAS V SEKOLAH DASAR DENGAN PENDEKATAN MATEMATIKA REALISTIK
No full textAda dua pertanyaan yang akan dijawab dalam penelitian ini, yaitu (1) apa konteks-konteks yang dapat dipergunakan untuk mengenalkan makna dari perkalian dua pecahan dan mencari hasil perkalian dua pecahan, dan (2) bagaimana menggunakan konteks-konteks tersebut untuk membantu siswa mengkonstruksi pemahaman tentang makna dari perkalian dua pecahan dan cara mencari hasil perkalian dua pecahan.
Pendekatan pembelajaran yang dipergunakan di dalam merancang proses pembelajaran pecahan adalah pendekatan matematika realistik. Rancangan pembelajaran yang dibuat adalah untuk siswa kelas V SD. Jenis penelitian yang dipergunakan dalam penelitian ini adalah penelitian pengembangan (development research). Menurut Gravemeijer dan Cobb (dalam Akker, Gravemeijer, McKeney, dan Nieveen, 2006) ada tiga fase dalam penelitian pengembangan, yaitu (1) persiapan uji coba desain, (2) uji coba desain, dan (3) analisis retrospektif. Dalam makalah ini disajikan bahan belajar untuk siswa untuk siklus kedua yang direvisi dari bahan belajar siswa untuk siklus pertama dari tiga siklus yang direncanakan.
Kata kunci: pecahan; pendekatan matematika realistik; penelitian pengembangan
COGNITIVE PROFILE OF SUBJECT 1 ABOUT PHILOSOPHY, PRINCIPLES AND CHARACTERISTICS OF REALISTIC MATHEMATICS EDUCATION BEFORE AND AFTER STUDYING THE REALISTIC MATHEMATICS EDUCATION LEARNING RESOURCE
No full textThe purpose of this study to create cognitive profiles of elementary school teachers
who have been and have not been following the PMRI workshop, before and after
they learning about the realistic mathematics education learning resource in
understanding about philosophy, principles, and characteristics of realistic
mathematics approach. The type of research used in this study is a combination of
qualitative research and developmental research. The developmental research is used
to construct a realistic mathematics education learning resource. The analysis steps
of qualitative data which was built by Miles and Huberman (1994) is used to create
cognitive profiles of teachers who become the subject research. The triangulation
process of data used in this study is the triangulation of method. The results
presented in this paper are the cognitive profile of one subject who is a PGSD
student. Research subjects involved in the trial for the first task, the learning
resource, and second task are six persons, which consists of three PGSD students
who are working on the final project, and three elementary school teachers
