The Enhancement of Mathematical Reasoning Ability of Junior High School Students by Applying Mind Mapping Strategy

Mathematical reasoning ability,  are component that must be governable by the student. Mathematical reasoning plays an important role, both in solving problems and in conveying ideas when learning  mathematics. In fact there ability are not still developed well, even in middle school. The importance of mathematical reasoning ability (KPM are parallel in improving student skill to mastery those three abilities. Therefore it is necessary to apply  learning strategy that is expected to improve the KPM, in mathematics teaching. This research applied mind mapping strategy (SMM) as an alternative  to improve all three.  This  aims to find out contribution level in SMM application to ward the enhancement of mathematical reasoning ability, at school rank (low , high and medium), KAM (high, medium and low). The research is a quasi-experimental research by using  Pretest and Posttest Control Group Design. The sample in this research is 130  students in eight of two School in  Ambon. Each school represents  high school rank and medium school rank. The hypothesis was tested at 5% significance level. The data were analysed by applying the Kolmogorov-Smirnov (KS), Levene test, t-test, t’-test , Mann-Whitney U test, and ANOVA two lines. The result shows that:(1) there is a difference achievement, the enhancement of  KPM, in experiment class and  control class; (2) there is an interaction between learning and school rank in enhancing the ability of mathematical reasoning; (3) there is no interaction between learning and KAM in increasing reasoning ability. Keywords: mathematical reasoning ability, mind mapping strategy

ANALISIS KEMAMPUAN BERPIKIR KREATIF DAN DISPOSISI MATEMATIS SISWA SMP NEGERI 2 KAIRATU DALAM MENYELESAIKAN MATERI SISTEM PERSAMAAN LINIER DUA VARIABEL

Penelitian ini bertujuan untuk menganalisis dan mendeskripsikan kemampuan berpikir kreatif dan disposisi Penulisan ini bertujuan untuk menganalisis dan mendeskripsikan kemampuan berpikir kreatif dan disposisi matematis siswa kelas VIII SMP Negeri 2 Kairatu dalam menyelesaikan materi sistem persamaan linier dua variabel. Jenis penelitian ini adalah penelitian kuantitatif-kualitatif. Sumber dalam penelitian ini adalah siswa kelas VIII SMP Negeri 2 Kairatu dan subjek dalam penelitian ini adalah 3 orang siswa diantaranya 1 orang mewakili masing-masing katagori kemampuan berpikir kreatif (tinggi, sedang, dan rendah). Instrument yang digunakan dalam penelitian ini yaitu soal tes kemampuan berpikir kreatif, dan angket disposisi matematis. Hasil penelitian menujukan bahwa kemampuan berpikir kreatif siswa pada materi sistem persamaan linier dua variabel masih rendah dengan presentase 77, 78%, dimana presentase untuk indikator fluency 3,70%, indikator flexibility 3,70%, indikator originality 0%, dan indikator elaboration 11,11%. Disposisi matematis siswa kelas VIII SMP Negeri 2 Kairatu berada pada kategori sedang dengan presentase 48,14

PENINGKATAN HASIL BELAJAR SISWA SMK NEGERI 6 MALUKU BARAT DAYA KELAS X PADA MATERI MATRIKS DENGAN MENGGUNAKAN MODEL PEMBELAJARAN PENEMUAN TERBIMBING (DISCOVERY LEARNING)

Study this aim for knowing upgrade results study student class X SMKN 6 Southwest Maluku on the material Matrix with using the learning model invention guided (discovery learning). Subject in study this is student class X SMKN 6 Southwest Maluku , totaling 30 students . Study this is study action class with the teacher in the role as teacher and ongoing for 2 cycles . Data collection is carried out with use test and sheet observation . Data analysis techniques used is technique qualitative data analysis . Analysis result showing that occur enhancement results study from cycle I to cycle II, which is the value of end cycle I shows as many as 33.33% (10 students ), who obtained value 70, after that cycle II increases to 83.33% (25 students ). View results from cycle I and cycle II then has occur enhancement from cycle I to cycle II. With that 's the learning model invention guided (discovery learning) could increase results study student class X on the material Matri

The Pot Calling the Kettle Black: Distancing Response to Ethical Dissonance

Six studies demonstrate the "pot calling the kettle black" phenomenon whereby people are guilty of the very fault they identify in others. Recalling an undeniable ethical failure, people experience ethical dissonance between their moral values and their behavioral misconduct. Our findings indicate that to reduce ethical dissonance, individuals use a double-distancing mechanism. Using an overcompensating ethical code, they judge others more harshly and present themselves as more virtuous and ethical (Studies 1, 2, 3). We show this mechanism is exclusive for ethical dissonance and is not triggered by salience of ethicality (Study 4), general sense of personal failure, or ethically neutral cognitive dissonance (Study 5). Finally, it is characterized by some boundary conditions (Study 6). We discuss the theoretical contribution of this work to research on moral regulation and ethical behavior

Reselling Information

Information is replicable in that it can be simultaneously consumed and sold to others. We study how resale affects a decentralized market for information. We show that even if the initial seller is an informational monopolist, she captures non-trivial rents from at most a single buyer: her payoffs converge to 0 as soon as a single buyer has bought information. By contrast, if the seller can also sell valueless tokens, there exists a ``prepay equilibrium'' where payment is extracted from all buyers before the information good is released. By exploiting resale possibilities, this prepay equilibrium gives the seller as high a payoff as she would achieve if resale were prohibited

PENGGUNAANMODEL PEMBELAJARAN KOOPERATIFTWO STAY-TWO STRAY (TS-TS) UNTUK MENINGKATKAN HASIL BELAJAR SISWA PADA MATERI BILANGAN BULAT

Penelitian ini bertujuan untuk meningkatkan hasil belajar siswa kelas VII SMP Negeri 11 Ambon pada materi bilangan bulat menggunakan model pembelajaran kooperatif Two Stay-Two Stray (TS-TS). Subjek dalam penelitian ini adalah siswa kelas VII SMP Negeri 11 Ambon dengan jumlah siswa 24 orang.Jenis Penelitian ini adalah Penelitian Tindakan Kelas (PTK).Penelitian ini terdiri dari dua siklus dengan setiap siklus terdiri dari dua pertemuan.Teknik pengumpulan data dalam penelitian ini diperoleh melalui observasi dan tes akhir setiap siklus.Hasil belajar siswa dari siklus I ke siklus II mengalami kenaikan sebesar 50%.Berdasarkan hasil yang diperoleh, maka dapat disimpulkan bahwa hasil belajar siswa pada materi bilangan bulat dapat ditingkatkan menggunakan model pembelajaran kooperatif Two Stay-Two Stray (TS-TS) di kelas VII SMP Negeri 11 Ambo

Post Newtonian SPH

We introduce an adaptation of the well known Tree+SPH numerical scheme to Post Newtonian (PN) hydrodynamics and gravity. Our code solves the (0+1+2.5)PN equations. These equations include Newtonian hydrodynamics and gravity (0PN), the first order relativistic corrections to those (1PN) and the lowest order gravitational radiation terms (2.5PN). We test various aspects of our code using analytically solvable test problems. We then proceed to study the 1PN effects on binary neutron star coalescence by comparing calculations with and without the 1PN terms. We find that the effect of the 1PN terms is rather small. The largest effect arises with a stiff equation of state for which the maximum rest mass density increases. This could induce black hole formation. The gravitational wave luminosity is also affected.Comment: 28 pages, 13 figures, revised version published in Ap

ANALISIS KEMAMPUAN PENALARAN MATEMATIS PESERTA DIDIK PADA MATERI ALJABAR KELAS VII SMP

Reasoning ability is the ability to think logically to draw a conclusion based on the previous statement. Mathematical reasoning ability can be seen from the test results of students in working on questions made based on indicators of mathematical reasoning ability. This study aims to describe students' mathematical reasoning abilities in algebraic material. The type of research used was qualitative research with 3 students selected from 24 class VII students of Ambon Catholic Junior High School based on the results of mathematical reasoning ability tests on algebraic material with high, medium and low mathematical reasoning ability categories. The results showed that subjects with high mathematical reasoning abilities can fulfill each indicator of mathematical reasoning ability. Student with moderate category fulfilled 3 indicators of mathematical reasoning. Student with low mathematical reasoning abilities did not meet all the indicator