scholarly journals The Effect of Problem Based Learning Model on Critical Thinking Ability of Students on Additives and Addictive Substances Class VIII SMPN 12 Padang

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.

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


2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Maifalinda Fatra ◽  
A Rizki ◽  
Tita Khalis Maryati

Mathematical Critical thinking is one of  mathematical abilities that must be obtained by students. Critical thinking is one of the high order thinking processes that can make concepts in student knowledge.  Students with critical thinking in mathematics learning mostly do rational activities such as interpreting information based on a particular theoretical framework, linking theory with practice, making claims and justifying it, utilizing data in support of argumentation, making relations or relationships between various ideas, asking questions, evaluating knowledge, predict, describe something, analyze, synthesize, and categorize. This study aims to analyze the effect of the Concept-Based Learning Model on the critical thingking mathematical abilities.The purpose of this research is to analyze the effect of Concept-Based Learning Model toward mathematics critical thinking ability. The method used in this research is quasi experiment by Randomize Control Group Post Test Only Design with cluster random sampling technique. Indicators of mathematics critical thinking skills measured in this study include providing simple explanations, building basic skills, concluding, making more explanations, and deciding an action. The results showed that the mathematics critical thinking ability of students in the experimental class for the five indicators that being analyze was higher than the ability of students in the control class. A fairly high difference in the indicator showed in give a simple explanation and concluding. and it means that the application of Concept-Based Learning Model significantly influences the  abilities  of students' mathematics critical thinking.


2021 ◽  
Vol 10 (2) ◽  
pp. 213-224
Author(s):  
Titania Mega Rizti ◽  
Erlina Prihatnani

AbstrakPembelajaran matematika diharapkan dapat mengasah kemampuan berpikir kritis, meskipun pembelajaran secara daring. Penelitian bertujuan menerapkan salah satu model pembelajaran yang menekankan pada aspek berpikir kritis yaitu model 3CM (Cool-Critical-Creative-Meaningfull) pada materi bangun ruang sisi datar dan menganalisis dampaknya terhadap kemampuan berpikir kritis siswa. Populasi penelitian adalah seluruh siswa SMPN di Salatiga, sampelnya 82 siswa dari SMPN 1 Salatiga dan SMPN 6 Salatiga yang dibagi menjadi kelompok eksperimen 1 dan 2. Desain penelitian eksperimen semu ini adalah randomized control grup pretest-postest design. Instrumen tes berbentuk 7 soal uraian, terdiri dari pretest dan posttest dengan rubrik penilaian berdasarkan aspek Focus, Reason, Inference, Situation, Clarity, and Overview. Uji hipotesis menunjukkan penerapan model pembelajaran 3CM dengan dua jenis kegiatan creative yang berbeda yaitu berbasis project dan berbasis problems posing menghasilkan kemampuan berpikir kritis yang sama. Penerapan 3CM dimungkinkan untuk menggunakan dua jenis kegiatan tersebut dalam melakukan aspek creative guna mengasah kemampuan berpikir kritis siswa.  The Effectiveness of The 3 CM (Cool-Critical-Creative-Meaningful) Learning Model on The Critical Thinking Ability of SMP StudentsAbstractMathematics learning is expected to hone thinking skills, although learning must be done boldly. This study aims to apply a learning model that emphasizes the critical thinking aspect, namely the 3CM (Cool-Critical-Creative-Meaningful) model on the flat-sided building material, and analyze its impact on students' critical thinking skills. The study population was all students of SMPN in Salatiga, the sample was 82 students from SMPN 1 Salatiga and SMPN 6 Salatiga who were divided into experimental 1 and 2 groups. This quasi-experimental research design was a randomized control group pretest-posttest design. The test instrument is in the form of a description of 7 questions consisting of a pretest and posttest with a rubric based on aspects Focus, Reason, Inference, Situation, Clarity, and Overview. Hypothesis testing that the application of the 3CM learning model with different types of Creative (based on project and problems posing) activities results in the same critical thinking skills.


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.


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


2020 ◽  
Vol 9 (4) ◽  
pp. 183-190
Author(s):  
Kasmiati Kasmiati ◽  
Tahril Tahril ◽  
Vanny M. A. Tiwow

This study aimed to identify the effect of the problem-based learning model on the reaction rate toward critical thinking abilities of students of MAN 1 Palu. This study was a quasi-experiment with a pretest-posttest control group design. Sampling was taken by purposive sampling technique with the sample of class XI MIA 3 as the experimental group (n = 18) and class XI MIA 4 as the control group (n = 14). The results of the study and data analysis obtained an average value of students' critical thinking skills from the questionnaire that the experimental group was 82.95%, higher than the control group (73.43%). The average value of students' critical thinking skills from the description test showed that the experimental group was 79.42%, higher than the control group (58.02%). Students' critical thinking skills data using parametric statistical analysis with t-test (right-party t-test) obtained tcount > ttable was 6.83 > 2.04 which corresponds to the H1 acceptance area, therefore H1 was accepted and H0 rejected. This means that students 'critical thinking skills in the experimental group were higher than in the control group. The results of this study concluded that the problem-based learning model had a significant influence on the thinking ability of students in grade XI on the reaction rate at MAN 1 Palu.


2021 ◽  
Vol 16 (3) ◽  
pp. 1290-1299
Author(s):  
Gunawan Adnan ◽  
Teuku Zulfikar ◽  
Muhammad Siddiq Armia ◽  
Syahbuddin Gade ◽  
Warul Walidin

This article describes the effects of inquiry learning model on college students’ cognitive and critical thinking skills. The research aims at understanding the extent inquiry learning model improves the college students’ cognitive and critical thinking skills in the lessons of educational philosophy and exploring students’ responses to the model. This is a pre-experimental research design, using the one group pretest-posttest design. The samples of the study were an intact class, the experimental group and no control group is needed. The data was analysed using independent test samples t-test and Normalized Gain test. The Research found that the inquiry model is effective in improving college students’ cognitive and critical thinking ability in an educational philosophy class. Overall, the N-Gain indicator of cognitive ability increased by an average of 0.66, and the N-Gain indicator of critical thinking skills increased by an average of 0.63.                                                                                                                                                                                                                                                         Keywords: Congnitive skill, Critical thinking, Inquiry learning, Educational Philosophy, College Student


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.


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