scholarly journals PENGEMBANGAN INSTRUMEN TES ESSAY KEMAMPUAN BERPIKIR KRITIS PESERTA DIDIK PADA MATERI IKATAN KIMIA KELAS X SMA/MA

Author(s):  
Jumadi Sihombing

This study aims to produce an essay test instrument for critical thinking skills on chemical bonding material and to know the validity, reliability, distinguishing features, and the difficulty level of the test instrument. The research method uses the ADDIE model with five stages namely analyze, design, develop, implementation, & evaluation. In this research formative evaluation is done, meaning that the evaluation stage is carried out at the end of each stage. The test developed in the study consisted of eight essay items, referring to 10 indicators of critical thinking according to Ennis. Validation of items was done by three validators. Based on the validity according to the experts obtained an average of every aspect, namely 95% material, 96.87% construction and 91.15% language with an overall average score of 94.34% validation has a valid category. Eight valid questions were tested on 20 students. The calculation of the reliability coefficient (r11) with the Alpha Cronbach formula was obtained at 0.65 in the high category, the distinguishing power had an average value of 0.26 in enough categories and the difficulty level of the questions had an average value of 0.42 in the medium category. The developed test instrument is declared valid, reliable, has a good differentiating power, and the level of difficulty of the questions that are being made so that it can be used as a measuring tool to determine students' critical thinking skills.Key word: Research & development, critical thinking test instrument,chemical bonding

2016 ◽  
Vol 4 (1) ◽  
pp. 24
Author(s):  
Sri Yuliyanti ◽  
Saiful Prayogi ◽  
Bq. Azmi Sukroyanti

This research aims to enhance students’ critical thinking skills of SMP Islam Abhariyah on the academic year 2015/2016 through the application of the generative learning model. Research method used was classroom action research (PTK). This research was conducted in two cycles. Each cycle consist of planning, implementating, observating, and reflecting. Data learning activities of the students and teachers’ activities obtained by observation, while data on students’ critical thinking skills test was obtained by an evaluation at the end of each cycle. The subject of this study was 28 students in VIII-B class. Application of the generative learning model in this study considered as successful if the value of critical thinking skills of the students at a minimum categorized as critical. The data for student’s critical thinking skills was accomplished by using an essay test, and the average value of students is 41.96 (categorized very less critical) whit classical completeness achieved only 3,57% in the cycle I and in the cycle II showed the average value of the students is 68,92 (categorized critical) whit classical completeness increased to 85,71%. Research data of student’s activities was taken by using the student’s observation sheet. The average score in the cycle I is 46.50 (categorized as fairly active) and in the cycle II is 66.00 (categorized as active). The data of teacher’s activities was taken by using teacher’s observation sheet. The presentation of learning material is 64,28% (categorized as good) in the cycle I and 91,06% (categorized as very good) in the gathering II. Thus, the conclusion to this study is the application of the generative learning model can improve students’ critical thinking skills.


2021 ◽  
Vol 6 (1) ◽  
pp. 13
Author(s):  
Wahyu Rizaldi ◽  
Mawardi Mawardi

Lack of critical thinking skills in students is a problem faced in thematic learning at <em>SD Negeri 2 Kedungrejo. </em>Therefore, it had an impact on low learning outcomes. From this problem, this study aims to improve critical thinking skills and learning outcomes through discovery learning model. Classroom Action Research (PTK) was used in this study. While the data collection instruments included observation sheets, test questions, and questionnaires. The data analysis technique used a comparative descriptive technique. The subjects of this study were 22 4<sup>th</sup> grade students of <em>SD Negeri 2 Kedungrejo.</em> The results of this study indicated an improvement of critical thinking skills and students’ learning outcomes. This can be proven by the average value of students' critical thinking skills in cycle I of 54.67% and increased again in cycle II by 69.84%. Whereas for students’ learning outcomes, in cycle I showed students’ average score of 70. Moreover, it increased by an average value of 80 in cycle II. To sum up, these results showed that applying discovery learning model in the online learning process were able to improve students’ critical thinking skills and learning outcomes.


2021 ◽  
Vol 4 (2) ◽  
pp. 118-133
Author(s):  
Romy Desmara Fendi ◽  
Agus Suyatna ◽  
Abdurrahman Abdurrahman

Critical thinking skill which is one of the important abilities in the 21st century is important to be trained in learning. The purpose of this research is to develop an AR-based worksheet on dynamic electrical material that is valid, practical, and effective to stimulate students’ critical thinking. The development model used the ADDIE model which consists of analysis, design, development, implementation, and evaluation steps. The product developed was tested for validation, practicality test, and effectiveness test. The results of the validity test obtained a value of 81.80% with a valid category. The results of the practicality test obtained a percentage of 80.85% with good criteria. The results of the effectiveness test showed an N-Gain value of 0.67 with the moderately effective category. From the average pretest and posttest scores, it can be seen that the posttest average score increased by 39.04 which indicates that the use of AR-based worksheets can improve students’ critical thinking. It can be concluded that AR-based worksheets on the concept of dynamic electricity developed are valid, practical, and effective to stimulate students’ critical thinking.


2020 ◽  
Vol 5 (3) ◽  
pp. 271
Author(s):  
Putri Supraningsi A.B ◽  
Muhammad Anas ◽  
Hunaidah M

This study is motivated by the low critical thinking skills and learning outcomes possessed by the students of VII grade of SMPN 14 Kendari. This study aims to determine the enhancement in critical thinking skills and learning outcomes on the subject Matter of Heat and Its Transfer. The population of this study were all students of VII grade of SMPN 14 Kendari who were registered in the odd semester in 2019/2020 school year, with total 204 students. The sample of this research was group VII3 with total 41 students as the experimental group and group VII4 with total 41 students as the control group who were taken by using random sampling techniques. The research data were analysed by using descriptive and inferential statistics. Research results show: 1) There is no significant difference between the pre-test average scores of students critical thinking skills in the experimental group and the control group; 2) There is no significant difference between the pre-test average scores of the experimental group students and the control group; 3) The post-test average score of students from critical thinking skills in the experimental group was significantly higher than in the control group; 4) The post-test average score of the experimental group students was significantly higher than in the control group; 5) The average value of N-gain critical thinking skills of students in the experimental group was significantly higher than the control group; 6) ) The average value of N-gain learning outcomes of students in the experimental group was significantly higher than the control group.


2015 ◽  
Vol 20 (1) ◽  
pp. 53
Author(s):  
Suhaeti Sri Mulyasih

The aim of this study was to get information about the effectiveness of using descriptive learning cycle instructional model to improve students’ understanding and critical thinking skills related to chemical bonding concept in one of vocational high schools (SMK) in Sumedang. Indicators for conceptual understanding consisted of six categories, while indicators of critical thinking skills were four indicators. The method used was quasi-experimental research design nonequivalent pretest-posttest control group design. Instrument used was essay test. T test results showed that based on the average value of n-gain, difference in overall students' conceptual understanding in experimental class and control class was significant (p = 0.00 p <0.05), and critical thinking skills significantly  developed by descriptive learning model cycle was to identify conclusions (p = 0.004 p <0.05).Keywords: critical thinking skills, concepts of chemical bonding, descriptive learning model, understanding conceptsABSTRAK Penelitian ini bertujuan untuk memperoleh informasi mengenai penggunaan model pembelajaran siklus belajar deskriptif dalam upaya meningkatkan pemahaman konsep dan berpikir kritis siswa di salah satu SMK di Kabupaten Sumedang pada konsep ikatan kimia. Indikator pemahaman konsep yang diselidiki terdiri dari enam kategori, sedangkan indikator keterampilan berpikir kritis yang diselidiki berjumlah empat indikator. Metode penelitian yang digunakan adalah kuasi eksperimen dengan desain penelitian nonequivalent pretest-posttest control group design. Instrumen yang digunakan berupa soal tes berbentuk esai. Hasil uji t menunjukkan bahwa berdasarkan nilai rata-rata n-gain, perbedaan pemahaman konsep siswa antara kelas eksperimen dan kelas kontrol secara keseluruhan berbeda signifikan (p= 0,00  p< 0,05), dan keterampilan berpikir kritis yang paling dapat dikembangkan secara signifikan melalui model pembelajaran siklus belajar deskriptif adalah mengidentifikasi kesimpulan (p= 0,004 p< 0,05).Kata kunci: model pembelajaran deskriptif, pemahaman konsep, keterampilan berpikir kritis, konsep ikatan kimia


2019 ◽  
Vol 4 (3) ◽  
pp. 363
Author(s):  
Intan Ekananda Kirana ◽  
Sentot Kusairi

<div align="center"><table width="645" border="1" cellspacing="0" cellpadding="0"><tbody><tr><td valign="top" width="439"><p><strong>Abstract:</strong> This study aims to examine students' critical thinking skills on a one-dimensional kinematics graph. This quantitative descriptive model involved 51 final semester students and 32 early semester students. The test instrument was in the form of two description questions with 4 indicators of critical thinking skills, namely interpretation, analysis, evaluation, and inference. The results show that students have critical thinking skills in the low category, with the average score of the final semester students being slightly higher than the average grade of the early semester students. Students have difficulty determining the instantaneous speed of the graph of the time and displacement position of the time velocity graph.</p><p class="Abstract"><strong>Abstrak:</strong><em> </em>Penelitian ini bertujuan menguji kemampuan berpikir kritis mahasiswa pada grafik kinematika satu dimensi. Model deskriptif kuantitatif ini melibatkan 51 mahasiswa semester akhir dan 32 mahasiswa semester awal. Instrumen tes berupa dua soal uraian dengan empat indikator kemampuan berpikir kritis, yaitu interpretasi, analisis, evaluasi, dan inferensi. Hasil menunjukkan bahwa mahasiswa memiliki kemampuan berpikir kritis pada kategori rendah, dengan nilai rata-rata mahasiswa semester akhir sedikit lebih tinggi dari pada nilai rata-rata mahasiswa semester awal. Mahasiswa kesulitan menentukan kecepatan sesaat dari grafik posisi waktu dan perpindahan dari grafik kecepatan waktu.</p></td></tr></tbody></table></div>


2020 ◽  
Vol 3 (2) ◽  
pp. 185
Author(s):  
Sri Wahyuni Hasan ◽  
Army Auliah ◽  
Netti Herawati

The type of this study is Research and Development (R&D) which aims at examining the development procedure and quality of assessment instruments to measure critical thinking skills of students on Stoichiometry material. The study employed Plomp’s research and development model design that consisted of 5 stages, namely: (1) initial investigation stage, consisted of field study and review literature (2) design stage, consisted of planning and organizing assessment instruments for critical thinking skills on Stoichiometry material (3) realization/ construction stage, (4) test, evaluation and revision stage, consisted of two main activities, namely validation by experts and small grub test, and (5)  implementation stage is the field test. The assessment instruments which was developed was in a form of essays format. The research subjects were students of grade XI MIPA 6 SMAN at SMA N 1 Makassar with 34 students. Data on the results of the instrument’s validation by Experts was declared to be very feasible/ valid with an average percentage of 91.66%. The results of the validity analysis of the items indicate that the items support the validity of the test so that it is said to be feasible or valid, while the item reliability was stated reliable with a reliability value of 0.897 with a high interpretation. Analysis of the difficulty level of the instrument obtained an average score of 0.64 with the medium category. The distinguishing power of the instrument shows good category with an average value of 0.49. The practicality of the instruments assessed by the teacher obtained a percentage of 92.5% with a very practical category. The results of the analysis of students' critical thinking skills obtained that the average critical thinking skills of students are in medium category.


2021 ◽  
Vol 20 (1) ◽  
pp. 33
Author(s):  
I Made Astra Winaya

This study aimed at developing Tri Hita Karana based student worksheets to improve students' critical thinking skills. The model used in the development of Tri Hita Karana-based worksheets in this study was the ADDIE model (Analyze, Design, Development, Implementation, Evaluation). The results of this study revealed that the validity of the developed student worksheets was excellent. It was indicated by the average test scores of material and design experts which was about 83.75% and 81.58% and considered having very good quality. The readability test in class A and B obtained an average score of 82.27% and 80.64% with very good quality. The results also showed that the developed worksheets were able to improve students' critical thinking skills. This could be seen from the n-gain values in class A and B of 0.74 and 0.78 in the medium category, and the sig value. in the paired sample t test of 0.00 in both classes. Teachers and students gave good responses to the developed worksheets. In conclusion, Tri Hita Karana based student worksheets with the feasibility and effectiveness in improving students' critical thinking skills were successsfully developed.


2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Aisyiyah Dinnur Utami ◽  
Eko Yulianto ◽  
Fitria Fatichatul Hidayah

The purpose of this study was to examine the effect of the concept map learning method on students' critical thinking skills in basic chemical law material. This type of research is a quasi-experimental design with a nonequivalent control group. The research instruments used were tests and questionnaires. The variable measured was students' critical thinking. The results showed that the concept map learning method had an effect on students' critical thinking skills. This can be seen in the average value of student responses and higher learning outcomes.. In the experimental class, there was an increase in critical thinking skills from the pretest average score of 48.31 to the posttest average score of 51.40. Meanwhile, the control class experienced a decrease from the pretest average value of 47.95 to the posttest average score of 44.40. Students in the experimental class who were treated with the concept map method experienced an increase and obtained higher learning outcomes than the control class without treatment.


2022 ◽  
Vol 8 (1) ◽  
pp. 209-215
Author(s):  
Yusuf Yusuf

The purpose of this research is to improve students' critical thinking skills towards environmental problems through mini-project practicum activities on the concept of understanding public perceptions of environmental problems. This research is descriptive research using a qualitative approach. The subjects in this study were Semester II class E students who took Environmental Science courses in the Even Semesters of the 2019/2020 Academic Year. The instrument used to measure critical thinking skills using indicators developed by Ennis are 1) Elementary, 2) Clarification Basic Support, 3) Inference, 4) Advanced Clarification, 5) Strategies and Tactics. Results The average critical thinking ability of 20 students is in the medium category (average score of 69.54). Of the 20 students, 10% were in the very high category, 30% in the high category, 25% in the medium category, and 35% in the low category. Indicators of students' critical thinking in 5 aspects, each of which has an average value that is in the medium category


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