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All Journal PROSIDING SEMINAR NASIONAL LEMBAGA PENELITIAN DAN PENDIDIKAN (LPP) MANDALA Jurnal Matematika UNAND
Mira Adriani
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Arts Chemistry Computer Science & IT Education Mathematics Public Health

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PENGARUH MODEL PEMBELAJARAN PROBLEM BASED RESEARCH (PBR) BERBANTUAN ARTIKEL KIMIA TERHADAP KETERAMPILAN BERPIKIR KRITIS DAN HASIL BELAJAR SISWA PADA MATERI SISTEM KOLOID Mira Adriani; Khaeruman Khaeruman; Dahlia Rosma Indah
P-2623-0291
Publisher : Prosiding Seminar Nasional Lembaga Penelitian Dan Pendidikan (LPP) Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (734.395 KB) | DOI: 10.1234/.v0i0.895

Abstract

One of colloid system subject material characteristicis abstract concepts causing students difficulties to understand it, so that the student critical thinking ability and learning outcomes is low. This study aims to determine the effect of Problem Based Reasearch (PBR) model assisting withchemistry articles on studentcritical thinking skills and learning outcomes. In form of quasi experimental, this research was carried out by Posttest Only Control Group Design with all 40 amount students of class XI IPA as poppulation who divided into 2 classes. Through saturated sampling, so that IPA 1 class as experiment class and IPA 2 class as control class. The data was collected byessay and multiple choice test. Data were analyzed by t-test statistic. The result of critical thinking skilldata analysis obtained t count = 3.19 with, ttable = 1.687 at df = 38 and significant level 5%. Because tcount> ttable (3.19> 1.687) then the null hypothesis (H0) proposed is rejected and Ha accepted. While learning outcomes data analysis obtained t count = 0.88 ttable = 1.687 at df = 38 and a significant level 5%. Because t count< ttable (0.88< 1.687) then the proposed null hypothesis (H0) is accepted and Ha is rejected. Based on the research results, it can be concluded that the application of Problem Based Research (PBR) model assited chemistry article has an effect on critical thinking skill and has no effect on student learning outcomes.
Bilangan Kromatik Lokasi untuk Graf Pn ᴏ Km dengan n ≥ 1 dan m ≥ 2 Mira Adriani; Narwen Narwen
Jurnal Matematika UNAND Vol 4, No 3 (2015)
Publisher : Jurusan Matematika FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmu.4.3.90-94.2015

Abstract

Misalkan terdapat suatu graf terhubung G = (V, E). Bilangan kromatik lokasi dari G adalah minimum dari banyaknya warna yang digunakan pada pewarnaan lokasi dari graf G. Kelas warna pada graf terhubung G dan Π = {S1, S2, · · · , Sk} merupakan partisi terurut dari V (G) berdasarkan suatu pewarnaan titik. Kode warna cΠ(v) dari suatu titik v ∈ V (G) didefinisikan sebagai vektor−k :cΠ(v) = (d(v, S1), d(v, S2), · · · , d(v, Sk)), dimana d(v, Si) = min{d(v, x|x ∈ Si)} untuk 1 ≤ i ≤ k.Jika setiap titik yang berbeda di G memiliki kode warna yang berbeda untuk suatu Π, maka c disebut pewarnaan lokasi dari G. Pada makalah ini akan dikaji kembali tentang penentuan bilangan kromatik lokasi dari graf Pn ◦ Km dengan n ≥ 1 dan m ≥ 2, seperti yang telah dipaparkan dalam [2]. Kata Kunci: Pewarnaan Lokasi, Bilangan Kromatik Lokasi, Graf Korona
Co-Authors Dahlia Rosma Indah Khaeruman Khaeruman Narwen Narwen