scholarly journals MENINGKATKAN KETERAMPILAN BERPIKIR KRITIS DAN KEMAMPUAN MEMECAHKAN MASALAH SISWA MELALUI PEMBELAJARAN BERBASIS MASALAH [IMPROVING STUDENTS’ CRITICAL THINKING SKILLS AND PROBLEM SOLVING ABILITIES THROUGH PROBLEM-BASED LEARNING]

2019 ◽  
Vol 2 (2) ◽  
pp. 108
Author(s):  
Mery Fransiska Simanjuntak ◽  
Niko Sudibjo

<p>Critical thinking and problem-solving abilities need to be possessed by each person in order to be able to solve various problems and make decisions correctly. One of many tools for developing critical thinking skills is learning mathematics. The purpose of this study is to analyze whether Problem Based Learning is able to increase students’ abilities in critical thinking, problem solving, and learning achievement. Using Classroom Action Research (CAR) methods for three cycles, research was conducted on 24 grade 8 math students at the Pelangi Kasih School. The results of this study showed that Problem Based Learning is able to increase students’ critical thinking, problem solving, and learning achievement.</p><p><strong>BAHASA INDONESIA ABSTRACT: </strong>Keterampilan berpikir kritis dan kemampuan memecahan masalah adalah dua hal penting untuk siswa agar mampu membuat keputusan yang benar dan memecahkan berbagai masalah dalam hidupnya. Salah satu sarana untuk mengembangkan keterampilan berpikir kritis dan memecahkan masalah adalah melaui pembelajaran berbasis masalah. Tujuan dari penelitian ini adalah untuk menganalisis penggunaan Pembelajaran Berbasis Masalah (PBM) untuk meningkatkan keterampilan berpikir kritis dan kemampuan memecahkan masalah. Menggunakan metode Penelitian Tindakan Kelas (PTK) yang dilaksanakan sebanyak tiga siklus, penelitian  dilakukan pada dua puluh empat siswa pada kelas matematika kelas VIII, Sekolah Pelangi Kasih jakarta. Hasil penelitian ini menunjukkan bahwa Pembelajaran Berbasis Masalah dapat meningkatkan keterampilan berpikir kritis dan kemampuan memecahkan masalah pada  siswa .</p>

Author(s):  
Afif Nur Hidayat

<p>This study aims to: (1) Know the development process and (2) increase the critical thinking skills of class XI TKJ students of SMK Bina Teknologi Purwokerto on bandwidth management material.</p><p>This research is a Classroom Action Research which was conducted from 27 October 2020 to 23 November 2020. The stages of the research consisted of planning, action, observation and reflection. The research was conducted in 3 cycles, each of which consisted of one meeting. The research instrument consisted of observation sheets and tests of students' critical thinking skills. Learning in this study uses the Problem Based Learning learning model. The action of data analysis used data from observations and the process of analyzing data from the test results of students' critical thinking skills.</p><p>Before the implementation of the Problem Based Learning learning model for XI TKJ students, data was obtained with an average grade XI TKJ grade 54 and the completeness of students who had a score above 36% KKM. After applying the Problem Based Learning model in cycle 1, the class average increase to 60.04 and the completeness of students who have a score above the KKM is 44%. Then it has increased after cycle 2 with an average class score of 69.72 and completeness of students who have scores above the KKM 64%. Then it has increased after cycle 3 with an average class score of 76.72 and the completeness of students who have a score above the KKM of 80%. Thus it can be said that the application of the Problem Based Learning learning model can improve students' critical thinking skills.</p><p><strong>Keywords</strong>: critical thinking, problem based learning model, classroom action research,</p>


2015 ◽  
Vol 2 (1) ◽  
pp. 63 ◽  
Author(s):  
Miftakhus Sholikhah ◽  
Hartono Hartono

Penelitian ini bertujuan untuk mendeskripsikan: (1) keefektifan problem-based learning dengan setting model pembelajaran kooperatif tipe Numbered Head Together (PBL-NHT) dan problem-based learning dengan setting model pembelajaran kooperatif tipe jigsaw; dan (2) pembelajaran yang lebih efektif antara PBL-NHT dan PBL-Jigsaw ditinjau dari prestasi belajar matematika, kemampuan berpikir kritis, dan disposisi matematis siswa kelas X SMA. Penelitian ini merupakan penelitian eksperimen semu (quasi eksperimen), yang menggunakan rancangan pretest-postest non-equivalen multiple-group design. Instrumen yang digunakan adalah tes prestasi belajar matematika, tes kemampuan berpikir kritis, dan angket disposisi matematis. Data dianalisis menggunakan uji multivariat (MANOVA) dan independent sample t-test. Hasil penelitian menunjukkan bahwa kedua model pembelajaran ini efektif ditinjau dari kemampuan berpikir kritis dan disposisi matematis, tetapi tidak efektif ditinjau dari prestasi belajar matematika. PBL-Jigsaw lebih efektif dibandingkan PBL-NHT ditinjau dari disposisi matematis, tetapi tidak berbeda jika ditinjau dari kemampuan berpikir kritis matematis dan prestasi belajar matematika. Kata Kunci: problem-based learning, numbered head together, jigsaw, prestasi belajar matematika, kemampuan berpikir kritis, disposisi matematis   THE COMPARISON OF THE EFFECTIVENESS OF PROBLEM-BASED LEARNING OF NUMBERED HEAD TOGETHER AND THAT OF THE JIGSAW Abstract This study aims to describe: (1) the effectiveness of problem-based learning of the numbered head together (PBL-NHT) type and that of jigsaw (PBL-Jigsaw) type, and (2) the more effective teaching between PBL-NHT and PBL-Jigsaw in terms of learning achievement, critical thinking skills, and mathematics dispositions of class X students. This study was a quasi-experiment using a pretest-posttest with the non-equivalent multiple-group design. The instruments used were a math achievement test, critical thinking test, and mathematics disposition questionnaire. The data were analyzed using the multivariate (MANOVA) and independent sample t test. The results of this study show both the models are effective in terms of critical thinking skills and mathematics dispositions, but they are not effective in their learning achievement. The PBL-Jigsaw is more effective than PBL-NHT in mathematics dispositions, but does not differ in terms of the critical thinking skills and learning achievement. Keywords: problem-based learning, numbered head together, jigsaw, learning achievement, critical thinking skills, mathematics dispositions


Author(s):  
Deviana Yulianti

<p><em>The demands of the 2013 curriculum ideally are that learning is able to develop 4C skills, one of which is critical thinking and problem-solving skills (Critical-Thinking and Problem-Solving Skills), namely being able to think critically, laterally, and systematically, especially in the context of problem solving. In fact, students' critical thinking skills have not been maximally developed, especially in elementary schools. The learning process in elementary schools currently requires problem-based learning that requires students to actively carry out investigations in solving problems and the teacher acting as a facilitator or learning guide will be able to shape the ability of students to think critically. The purpose of this research is to describe the concept of Problem Based Learning (PBL), the concept of critical thinking ability, and the relationship between Problem Based Learning (PBL) and critical thinking ability. The results of the Problem Based Learning (PBL) model improve critical thinking ability.</em></p>


2021 ◽  
Vol 8 (2) ◽  
pp. 200
Author(s):  
Teuku Fakhrizal ◽  
Uswatun Hasanah

The aims of this study to determine the improvement of students' critical thinking skills through the application of learning model the Problem Based Learning in Biology subjects in class X SMA Negeri 1 Kluet Tengah. The subjects in this study were students of class X SMA Negeri 1 Kluet Tengah, with total of 31 students, with focus of this research critical thinking skills ability in Biology subjects. The research design used was classroom action research, which was conducted in two cycles. Each cycle consists of four stages, namely: planning, implementing, observing, and reflecting. In the pre-cycle, the students 'critical thinking ability was 37.81% in the less critical category, since implementation of the first cycle the students' critical thinking ability became 51.80% with the fairly critical category. In cycle II, the average achievement of students' critical thinking skills has increased to 76.90% in the critical category. Thus the results of this study indicate that the application of learning model the Problem Based Learning can improve students' critical thinking skills in Biology subjects in Class X SMA Negeri 1 Kluet Tengah.


2019 ◽  
Vol 3 (1) ◽  
pp. 108
Author(s):  
Ryan Oktapratama ◽  
Imanuel Adhitya Wulanata Chrismastianto ◽  
Dylmoon Hidayat

<p class="abstrak">Critical thinking is one of the most important issues in education. However, based on field observation results it is found that students have low critical thinking skills. One reason is that learning activities in the classroom do not foster students’ critical thinking skills. The purpose of this research study to enhance students’ critical skills by implementing the <em>Problem-based Learning </em>(PBL) method. The research subjects were 29 grade 7 students in a junior high school in Manado. The research method used was Classroom Action Research (CAR), conducted from September 12 to November 3, 2017. The instruments used were diagnostic tests, pre-tests and post-tests, observation sheets, student interviews, checklists by observers and students, and the researcher’s reflection journal. Data results were analyzed using the descriptive qualitative method. The results showed that the implementation of the PBL method was able to enhance students’ critical thinking skills in learning math with the achievement percentage of students who passed the KKM for pre-test and post-test based on the overall data analysis result from cycle one to two showing an enhancement of 22% on the first indicator, 9% on the third indicator, and 2% on the fourth indicator. The second indicator showed no enhancement amd there was a decrease of 8% on the fifth indicator. Therefore, the PBL method is effective in enhancing students’ critical thinking skills through each stage of the method in the learning process.</p><p class="abstrak"><strong>BAHASA INDONESIA ABSTRACT: </strong>Kemampuan berpikir kritis adalah salah satu hal terpenting dalam dunia pendidikan. Namun, berdasarkan observasi di lapangan ditemukan bahwa siswa memiliki keterampilan berpikir kritis yang rendah. Salah satu penyebabnya adalah aktivitas pembelajaran di kelas tidak melatih keterampilan berpikir kritis siswa. Adapun tujuan dari penelitian ini untuk meningkatkan keterampilan berpikir kritis siswa menggunakan metode <em>Problem-based Learning </em>(PBL). Subyek penelitian adalah 29 siswa kelas VII di suatu SMP di Manado. Metode penelitian yang digunakan adalah Penelitian Tindakan Kelas (PTK), dilakukan dari September sampai dengan November 2017. Instrumen yang digunakan adalah <em>diagnostic test</em>, <em>pre-test</em> dan <em>post-test</em>, lembar observasi, wawancara siswa, <em>checklist</em>oleh pengamat dan siswa, dan jurnal refleksi peneliti. Analisis data hasil penelitian menggunakan metode deskriptif kualitatif. Hasil penelitian menunjukkan bahwa penerapan metode PBL mampu meningkatkan keterampilan berpikir kritis siswa dalam pembelajaran matematika dengan peningkatan indikator satu sebesar 22%, indikator tiga sebesar 9%, dan indikator empat sebesar 2%. Adapun untuk indikator dua tidak mengalami peningkatan dan indikator lima mengalami penurunan sebesar 8%. Dengan demikian, metode PBL terbukti efektif meningkatkan keterampilan berpikir kritis siswa melalui setiap tahapan metode dalam proses pembelajaran.</p><div><hr align="left" size="1" width="33%" /></div>


Author(s):  
Tri Sutrisno

Abstrak: Penelitian ini bertujuan untuk menilai pengaruh penggunaan model problem based learning untuk keterampilan berpikir kritis dalam kewarganegaraan tentang sistem pemerintahan. Objek penelitian ini adalah kelas VI SDN Kolor II Sumenep. Termasuk 2 kelas yang digunakan dalam penelitian ini meliputi, kelas VIA SDN Pajagalan sebagai percobaan kelas I, VI A sebagai kelompok eksperimen dan kelompok kontrol VIB SDN Kolor II. Tes kelas yang dimaksudkan adalah kelas yang digunakan untuk menguji instrumen yang akan digunakan untuk mengambil data keterampilan berpikir kritis siswa. Pendekatan penelitian kuantitatif ini, syarat-syarat nilai perolehan kemampuan tes untuk skor keterampilan berpikir kritis atau nilai-nilai dijumlahkan dan dianalisis menggunakan t-test dua sampel independen. Pada validitas tes diperoleh hitungan ≥ r r - kritis (0,349), instrumen tersebut valid dan dapat digunakan. Dalam pengujian andal hitung r> r kritis (0,60), yaitu nilai Alpha 0,966 yang berarti lebih besar dari 0,60. Dengan demikian seluruh instrumen barang bisa diandalkan. Hasil pengujian hipotesis dapat dilihat dari data yang telah dianalisis dengan t 3,730> t-tabel 2,00 (α = 0,05). Dapat disimpulkan bahwa probabilitas kesalahan dalam penelitian ini masih di bawah 0,05. Pengujian hipotesis dapat diputuskan, bahwa dengan harga tinggi 3,730 t-test memiliki tingkat signifikansi 0,000, yang ternyata posisinya masih jauh di bawah nilai α = 0,05. Oleh karena itu penelitian ini berhasil menolak H0 pada tingkat signifikansi 5%. Lebih lanjut, dapat disimpulkan bahwa H1 terbukti benar. Berarti dalam kelompok eksperimen pretest posttest kelompok eksperimen adalah 54,38 adalah 74,38. Sedangkan rata-rata kelompok kontrol pretest adalah 51,94. Grup postes adalah 66,94. Ini adalah bukti bahwa terjadi peningkatan pada kelas eksperimen yang telah diberi perlakuan dengan model problem based learning. Dengan demikian kita dapat menyimpulkan kemampuan keterampilan berpikir kritis siswa dalam kelompok eksperimen lebih tinggi daripada kelompok kontrol. Model problem based learning berpengaruh positif terhadap kemampuan siswa untuk keterampilan berpikir kritis.Kata kunci: Model Problem Based Learning, Kemampuan Berpikir KritisAbstract: This study aims to assess the effect of the use of problem solving based learning model for critical thinking skills  in civics about the system of goverment. Object of this research is a class VI  SDN Kolor II Sumenep. Includes 2 classes used in this study include , VIA SDN Pajagalan class as a class I trial, VI A as an experimental group and a control group VIB SDN Kolor II . Class tests are intended class is used to test the instruments to be used to retrieve data critical thinking skills of students. This quantitative research approaches , the terms of the acquisition value of the test 's ability to critical thinking skills scores or values are summed and analyzed using t-test two independent samples. On the validity of the test obtained count ≥ r r - critical ( 0.349 ), the instrument as valid and can be used. In the test reliably count r > r critical ( 0.60 ) , namely Alpha value of 0.966 which means greater than 0.60. Thus the entire item instrument is reliable. Results of hypothesis testing can be seen from the data that has been analyzed by t 3.730 > t-table 2.00 (α = 0.05). It can be concluded that the probability of error in this study still below 0.05. Hypothesis testing can be decided, that with the high price of 3.730 t-test has significance level of 0.000, which turned out to be his position is still far below the value of α = 0.05. This study therefore managed to reject H0 at significance level of 5 % . Furthermore, it can be concluded that the H1 was proved right. Mean in the experimental group pretest posttest experimental group is 54.38 is 74.38. While the control group mean pretest is 51.94. Postes group is 66.94. This is evidence that an increase in the experimental class that has been given treatment with problem solving-based learning model. Thus we can conclude critical thinking skills  abilities of students in the experimental group was higher than the control group. Problem solving-based learning model a positive effect on students' ability tocritical  thinking skills.Keywords: Problem Based Learning Model, Critical Thinking Skills


Author(s):  
Erma Erma ◽  
Henny Dewi Koeswanti ◽  
Sri Giarti

The purpose of this study is to improve students' critical thinking skills using the Problem Based Learning model aided by flash card media. The research method used is a class action research method. The subjects of the study were the 5th grade students of SD St. Theresia Massudirini 77 with 40 students. The results of observations in the pre-cycle that the critical thinking skills of students in the category are quite critical (15%). Based on these problems, the researchers made improvements to the classroom action research, using the Problem Based Learning model aided by Flash Card media. The results showed that the critical thinking skills of students in the quite critical category were (32.5%) in the first cycle and during the second cycle increased to (75%).


2020 ◽  
Vol 5 (1) ◽  
pp. 62-69
Author(s):  
Suryadin Hasyda ◽  
Arifin Arifin

The aim of this study is to improve students' critical thinking skills through a problem based learning model in class IV SDN Ende 1. The type of research used in this study is classroom action research consisting of several interrelated cycles and the model chosen in this study is a Kemis and Mc Tagart model which consists of several stages namely planning, action, observation and reflection, where actions and observations are carried out together. The subjects of this study were 21 students in class IV SDN Ende 1. Based on the results of data analysis in classroom action research shows that the learning feasibility by applying the learning model Problem Based Learning has increased namely 81.5% in the first cycle and 94% in the second cycle, therefore it can be said that the learning process has been carried out very well and in accordance with the reference in the lesson plan that has been made. While the results of observations of student activities during learning by applying  model of problem based learning have increased, which is proved by the increase in the average score of student learning activities in the first cycle by 55% and the second cycle by 87%. This improvement shows that during the learning process students were actively involved in solving problems. The results of the students’ critical thinking ability test of the first cycle can be seen that, there are 9 students or 43% who reach the KKM standard, while 12 students or 57% do not reach the value of 70 in accordance with the minimum completeness criteria set by the school. While the second cycle is known that as many as 21 students (100%) have succeeded and reached the indicator of critical thinking. The highest score obtained by student is 90 and the lowest score is 70 with an average value of 80% in the critical category. Therefore, the implementation of research by applying the problem based learning model ends in the second cycle . So, through research that has been done, by applying the Problem Based Learning model it is proven that it can improve the critical thinking skills of class IV students whose critical thinking test results are complete or meet the minimum completeness criteria (KKM).


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