scholarly journals UPAYA MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS SISWA PADA MATA PELAJARAN BIOLOGI MELALUI PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING DI KELAS X SMA NEGERI 1 KLUET TENGAH

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.

2021 ◽  
Vol 1 (2) ◽  
pp. 149-157
Author(s):  
NGATIYEM NGATIYEM

This study aims to improve students' critical thinking skills through the application of the Problem Based Learning model to students. This model, if applied properly, can train students in solving contextual problems. The purpose of this research is to improve the critical thinking skills of students in class IXH MTs Darul A'Mal Metro City through the application of the Problem Based Learning model on population and environmental materials. classroom action research) using the Kemmis and Mc Taggart model where each cycle consists of planning (planning), implementation (action) and observation (observe), and reflection (reflect). The researcher acts as the designer of the action as well as the executor of the action, while the partner teacher acts as an observer. The research was conducted at MTs Darul A'Mal Metro in August-September. The research subjects were students of class IXH, totaling 24 male students. Data collection techniques used critical thinking ability observation sheets, critical thinking learning outcomes tests, field notes, and documentation. Data analysis was carried out by analyzing qualitative data consisting of data reduction, data presentation, verification and drawing conclusions. The research action is said to be successful if it reaches the predetermined success criteria of 75%. The results of the study based on observations showed critical thinking skills in the first cycle reached 57.80%, while in the second cycle it reached 79.38%, which means an increase of 21.58%. Based on the results of the critical thinking ability test in the first cycle, there were 54.17% of students who achieved the criteria for completeness, while in the second cycle, 79.17% completed the KKM. The conclusion of this study is that the Problem Based Learning learning model can improve students' critical thinking skills on population and environmental material in class IXH students in the 2016/2017 academic year at MTs Darul A'Mal Metro City. ABSTRAKKemampuan berpikir kritis merupakan hal sangat penting dalam pembelajaran IPA, dengan kemampuan berpikir kritis maka siswa akan dapat mengenali berbagai permasalahan, mampu mengidentifikasi dan menganalisis penyebab dari suatu masalah serta mampu membuat solusi serta mengevaluasi dari suatu permasalahan. Model Problem Based Learning  jika diterapkan dengan baik dapat melatih siswa dalam memecahkan masalah kontekstual  Tujuan penelitian ini adalah untuk meningkatkan kemampuan berpikir kritis siswa kelas IXH MTs Darul A’Mal Kota Metro melalui penerapan model Problem Based Learning pada  materi kependudukan dan lingkungan  Penelitian ini jenisnya adalah tindakan kelas (classroom action research) menggunakan model Kemmis dan Mc Taggart dimana   setiap siklus terdiri dari perencanaan (planning), pelaksanaan (action) dan pengamatan (observe), serta refleksi (reflect). Peneliti bertindak sebagai perancang tindakan sekaligus sebagai pelaksana tindakan, sedangkan guru mitra bertindak sebagai observer. Penelitian dilaksanakan di MTs Darul A’Mal Metro pada bulan Agustus-September.  Subjek penelitian yaitu siswa kelas IXH yang berjumlah 24 siswa laki-laki. Teknik pengumpulan data menggunakan lembar observasi kemampuan berpikir kritis , tes hasil belajar berpikir kritis, catatan lapangan,  dan dokumentasi. Analisis data dilakukan dengan menganalisis data kualitatif yang terdiri dari reduksi data, penyajian data, verifikasi dan penarikan kesimpulan. Tindakan penelitian dikatakan berhasil apabila mencapai kriteria keberhasilan yang telah ditetapkan ?75%. Hasil penelitian berdasarkan observasi menunjukkan kemampuan berpikir kritis pada siklus I mencapai 57,80%, sedangkan pada siklus II mencapai 79,38%, yang berarti mengalami peningkatan sebesar 21,58%. Berdasarkan hasil tes kemampuan berpikir kritis pada siklus I terdapat 54,17% siswa yang mencapai kriteria ketuntasan, sedangkan pada siklus II menjadi 79,17% tuntas KKM. Simpulan penelitian ini yaitu model pembelajaran Problem Based Learning dapat meningkatkan kemampuan berpikir kritis siswa pada materi kependudukan dan lingkungan pada siswa kelas IXH Tahun Pelajaran 2016/2017 MTs Darul A’Mal Kota Metro.


Author(s):  
Sri Rahayu

<p><em>This type of research is classroom action research. The purpose of this study was to improve critical thinking skills in science by applying the Discovery Learning model. The results showed that the application of the Discovery Learning model can improve critical thinking skills in science. The percentage of critical thinking skills in the very good, good, adequate, and poor categories. In pre-cycle it was 41%, cycle I was 68%, increased in cycle II to 86%, and increased again in cycle III was 95%.</em><em></em></p>


2018 ◽  
Vol 2 (2) ◽  
pp. 124-132
Author(s):  
Mesia Dewi Hasanah ◽  
Heffi Alberida ◽  
Yosi Laila Rahmi

Implementation of Curriculum 2013 requires students to learn actively, independently, and critical thinking. Critical thinking is an activity through thinking about ideas related to concepts or problems. The efforts to improve critical thinking skills of learners can be done by using the appropriate learning model. One of the learning models that can be used to improve the ability of critical thinking is a problem-based learning model. This type of research is quasi experiment with randomized control-group pretest posttest design. The sample of this research choosed by used purposive sampling method. Class VIII6 as experimental class and class VIII4 as control class. Data of this research result are quantitative data of critical thinking ability. Data were analyzed by using t test. The results showed that the mean difference of posttest value with pretest value of critical thinking ability of experimental class learners is higher than control class. Hypothesis testing with t-test obtained tcalculate=2,94>ttable= 1,67, then H1 accepted. Based on these results the authors conclude that the implementation of problem-based learning model has a positive effect on the ability to think critically learners on the material additives and addictive substances.


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>


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).


2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Melania Priska ◽  
Agnes Pendy ◽  
Natalia Peni ◽  
Ludovicus Carvallo

Solution material is one of the materials that requires a student's level of understanding at the critical thinking level. Critical thinking skills train students to learn to find and solve problems using scientific methods based on real experiences encountered and experienced directly. To be able to find the concept of knowledge based on existing realities, an appropriate learning model is needed, namely a problem-based learning model. This study aims to determine students' critical thinking skills. The type and design of this research is development research with a nonequivalent control group design. The samples of this research were students of semester 2, Biology Education Study Program, University of Flores. This research was conducted from April-June 2020. Data were collected using the critical thinking ability test technique of students in the chemical solution subject, followed by processing and analyzing data using the prerequisite analysis test in the form of normality test, homogeneity test, and t-test. The data analysis shows the significance value of the normality and homogeneity test, namely α> 0.05, while for the t-test α <0.05. From these results prove that problem-based learning can improve students' critical thinking skills in chemistry subject matter solution


2017 ◽  
Vol 1 (1) ◽  
pp. 171 ◽  
Author(s):  
Istikomah Istikomah ◽  
Basori Basori ◽  
Cucuk Budiyanto

Problem-based learning is characterized by the existence of a real problem as the context wherein students learn critical thinking skills, problem-solving, and knowledge acquisition. The concept of critical thinking gains popularity to help students obtain the ability to conduct fact analysis, support opinion with an argument, and problem-solving. The majority of Indonesian vocational school students, however, have difficulty in developing critical thinking skills and problem-solving. This research was purportedly designed to evaluate the differences of students' critical thinking ability in response to the application of various problem-based learning model namely Fishbone diagram, problem-based learning model, and expository learning model. A quasi-experimental design was applied to assess students' critical thinking. The findings indicate that there was a significant difference in students' critical thinking ability responding to the learning models. In summary, the research proposes the problem-based learning as an alternative learning model to improve student’s critical thinking ability.


Author(s):  
Sulasih Sulasih ◽  
Sarwanto Sarwanto ◽  
Suparmi Suparmi

<p class="Abstract">Teachers have not been optimal in strengthening students' cognitive awareness in learning physics. This study aims to determine the effect of learning with a metacognitive approach through Problem Based Learning (PBL) and Reciprocal Learning (RL) model among students who have high critical thinking ability and low critical thinking ability. This research is an experimental study with the 2x2x2 factorial design. Object research is students of grade 11 science class in a high school in Central Java. The sample was obtained by cluster random sampling technique obtained by one class as an experimental and another class as a control. Data collection techniques use test techniques for their cognitive learning outcomes as well as their critical thinking skills and questionnaire and observation techniques for their attitude and skill learning outcomes. Analysis of the data using ANOVA 2 ways. The results show: (1) there are differences in learning outcomes between students who were given Physics learning model of PBL with reciprocal learning model. (2) There are differences in learning outcomes between students who have high critical thinking skills and low critical thinking skills. (3) There is no interaction between physics learning of PBL model and Physics learning of reciprocal learning model with students' critical thinking ability.</p>


Author(s):  
Saut Lamhot Sitanggang ◽  
Edi Syahputra ◽  
Anita Yus

This study aims to determine the effect of the Problem-Based Learning model on students' mathematical critical thinking skills and Adversity Quotient. In addition, this study was also to see the interaction between learning and gender on students' mathematical critical thinking skills and Adversity Quotient. This research is a quasi-experimental research. The population in this study were all students at SMP N 4 LubukPakam for the 2020/2021 academic year, totaling 384 students. The research sample was 60 students, namely 30 students in class VII-1 and 30 students in class VII-2. The sample was selected by cluster random sampling. The instruments used were the mathematical critical thinking ability test and the Adversity Quotient attitude scale. The data obtained were analyzed using ANAVA in the Spss 20 program. The results showed that: 1) there was an effect of the Problem-Based Learning model on students' mathematical critical thinking skills with a significance value of 0.001 <0.05. 2) there is an effect of the Problem-Based Learning model on students' Adversity Quotient with a significance value of 0.00 <0.05. 3) there is no interaction between learning and gender on students' mathematical critical thinking skills with a significance value of 0.750> 0.05. 4) there is an interaction between learning and gender on students' Adversity Quotient with a significance value of 0.013 <0.05.


Author(s):  
Siti Khairani ◽  
Retno Dwi Suyanti ◽  
Daulat Saragi

The study aims to determine the influence of the Problem Based Learnimg (PBL) learning model and the motivation to students critical thinking skills, as well as the interaction between learning models and the motivation to learn from students critical thinking skills. This study was conducted at SD Negeri 105390 in the even semester of the 2019/2020 school year. The population in this study is a class V student of elementary school 105390 Island pictures numbering at 55 people. Sampling is carried out in total, i.e. V-A and V-B classes. The V-B class as an experimental class taught with a collaborative problem-based learning (PBL) model with the number of students 28 people. As for the control class is taught by a direct instruction model elected class V-A with the number of students as many as 27 people. This type of research includes research quasi experiments with 2x2 factorial design with analytical techniques variance (ANAVA) 2 lines. Based on the results of the analysis and research findings from the field obtained several conclusions that are answers to questions on the problem formulation, among them the critical thinking ability of students taught with a collaborative Problem-based learning model better than students taught with a direct learning model (sig. = 0.000 < 0.05), a student's critical thinking ability of high motivation is better than a low-motivation student (sig. = 0.01 < 0.05), and there is interaction between the two learning models with a level of motivation in influencing students ' critical thinking ability (sig. = 0.02 < 0.05).


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