JTK (Jurnal Tadris Kimiya)
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EFFECTIVENESS OF STRUCTURED-WORKSHEET USE TO REDUCE STUDENT MISCONCEPTIONS IN STOICHIOMETRY
Get PDFThis study aims to describe the effectiveness of Structured Problem-oriented worksheets (Structured Worksheet) in reducing misconceptions of 2th Senior High School Lamongan students in the 2019/2020 Academic Year. This study involved 19 students from 2th Senior High School Lamongan. The effectiveness measured by three indicators consist of: the level of mastery learning of students after Learning Activity Using Structured Worksheet; reduction of students' misconceptions; and student response questionnaire. Data obtained from learning outcome tests were included in the learning outcomes analysis format. Diagnostic test data were analyzed using descriptive statistics to find out what percentage of students experience misconceptions. Student response data in the form of satisfaction and motivation questionnaires were analyzed descriptively. The results showed that the average level of student learning completeness was 93 and was above the Standard Minimum Score of 80. The percentage of concept errors experienced by students on stoichiometry material decreased to 98%. Based on the questionnaire given, 89.5% of students have high satisfaction with stoichiometry learning using Structured Worksheet. As much as 78.9% of students have a high level of learning motivation. Based on the results, applying a Structured Worksheet in learning effectively reduces students' misconceptions in stoichiometry
ANALYSIS OF STUDENTS MENTAL MODELS THROUGH POE (PREDICT OBSERVE EXPLAIN) METHOD IN SALT HYDROLISIS TOPIC
Get PDFThis study aimed to analyze students mental models in salt hydrolysis topic using POE method (Predict Observe Explain) to determine students understanding of salt hydrolysis topic. The research method used descriptive qualitative approach. Data collection used diagnostic tests of mental models, observation, reflective journals and semi-structured interviews on samples of respondents of students class XI. The result showed that 3.88% of respondents had a Specific Misconceptions (SM) mental model, 7.9% Partially Correct (PC) and 88.146% Scientifically Correct (SC). It can be concluded that the majority of respondents have scientifically correct mental models and show themes which appeared at each macroscopic, symbolic and microscopic. Â
DEVELOPMENT OF EDUCATION FOR SUSTAINABLE DEVELOPMENT (ESD) BASED CHEMSDRO MOBILE LEARNING FOR INDONESIAN JUNIOR HIGH SCHOOL: RATE OF REACTION
Get PDFICT learning media mostly emphasize students content and motivation. The emphasis on protecting the environment as a form of development of sustainable living awareness is often considered not significant. Accordingly, many youth students begin to lose development of sustainable living awareness. This study aimed to produce and evaluate a learning media based on games in Android mobile learning- Chemsdro (Chemistry in Android) oriented to Education for Sustainable Development (ESD) on the topic rate of reaction. Characteristic  of Chemsdro Learning Media was the topic of rate of reaction created in the form of games that embedded in android mobile phones with game characters who have a mission to protect the environment. This learning tool was designed to give motivation for students to care about the environment. This research was Research and Development model, it was adopted the steps from Thiagarajaan including define, design, develop, and dissemination steps. The subjects of this study were students grade XI of SMA 1 Kendal. The product validation showed that the Chemsdro learning media was a very appropriate category to use with the Aiken V coefficient of 0.9. Student assessment of Chemsdro learning media also showed a good category
ANALYSIS THE 21ST CENTURY SKILLS OF STUDENTS IN CHEMICAL EQUILIBRIUM LEARNING WITH FLIPPED CLASSROOM-COLLABORATIVE PROBLEM SOLVING MODEL
Get PDFThis study aimed to analyze the 21st century skills of students in learning chemical equilibrium with the Flipped Classroom-Collaborative Problem Solving model. Flipped Classroom is a learning model that students learn first outside the classroom through video, then carry out active activities in class such as discussions, presentations, making posters, and doing practicum. Collaborative problem solving is done when students discuss in solving problems for each learning activity. The research method used descriptive qualitative method. Data collection techniques were: observation, interviews, questionnaires, and reflective journals. Data analysis consisted of several stages, namely data collection, data reduction, data presentation, and verification or conclusions. Based on data analysis, this learning model made students active in learning and also made the students learn independently outside the classroom using mobile learning and searching some sources of references. In addition, students were actively involved in problem solving discussions, presentations, making projects, and practicums that were designed by students themselves. Thus it can be concluded that the Flipped Classroom-Collaborative Problem Solving learning model can train and grow students critical thinking skills, creativity and innovation skills, communication skills, and collaborative skills in learning chemical equilibrium.Penelitian ini bertujuan untuk menganalisis keterampilan abad 21 peserta didik pada materi kesetimbangan kimia dengan model Flipped Classroom-Collaborative Problem Solving. Flipped Classroom merupakan model pembelajaran dimana peserta didik belajar terlebih dahulu di rumah, sedangkan Collaborative Problem Solving membantu peserta didik menghubungkan pengetahuan baru dan pengetahuan sebelumnya melalui kolaborasi yang efektif di kelas. Pembelajaran Flipped Classroom dilakukan dengan menggunakan mobile learning sebagai media pembelajaran yang berisi materi kesetimbangan kimia, contoh dan latihan soal, dan praktikum berbasis Education for Sustainable Development (ESD). Pembelajaran Collaborative Problem Solving dilakukan di kelas dengan membentuk kelompok diskusi untuk membahas dan menjawab Lembar Kerja Peserta Didik secara kelompok, peserta didik juga membuat poster dengan tema “kesetimbangan kimia dalam kehidupan sehari-hariâ€, dan praktikum dengan alat dan bahan yang di desain sendiri secara berkelompok oleh peserta didik. Metode penelitian yang digunakan pada penelitian ini adalah metode deskriptif kualitatif. Sampel yang digunakan adalah 36 peserta didik kelas XI IPA SMAN 2 Kota Tangerang Selatan. Teknik pengumpulan data pada penelitian ini melalui; observasi, wawancara, kuisioner, dan reflektif jurnal. Analisis data yang dilakukan terdiri dari beberapa tahapan, yaitu pengumpulan data, reduksi data, penyajian data, dan verifikasi atau kesimpulan. Berdasarkan analisis data, pembelajaran dengan menggunakan mobile learning sebagai media pembelajaran di rumah dan melakukan diskusi secara kolaboratif di kelas membuat peserta didik aktif di dalam pembelajaran. Sehingga, dapat disimpulkan bahwa Flipped Classroom-Collaborative Problem Solving dapat mengembangkan keterampilan berpikir kritis, kemampuan berkreativitas dan berinovasi, keterampilan berkomunikasi, dan keterampilan berkolaborasi pada pembelajaran kesetimbangan kimia
EFFECTIVENESS OF GUIDED DISCOVERY BASED THERMOCHEMISTRY MODULE TO TRAIN CRITICAL THINKING SKILLS BASED ON GENDER DIFFERENCES
Get PDFCritical thinking skills are important competencies that need to be developed in chemistry learning. This study aimed to determine the effectiveness of the guided discovery-based thermochemistry module in developing critical thinking skills based on gender differences. The subject of this research was 76 females and 20 males of class XI Mathematics and Nature Science from three high schools in Ponorogo, Indonesia. This study used one school for each category, namely high, medium, and low. The research method used a quasi-experimental design with one group pretest-posttest. The data analysis technique used T-test with SPSS 21 software. The result showed that the average increase in student scores or normality gain score (n-gain) was 0.5050 to 0.6362, which means students' critical thinking skills improved after the implementation of guided discovery-based thermochemistry modules. T-test result in high category schools obtained T count > T table (2.142> 2.032), which showed that there are significant differences between the critical thinking skills of female and male students. Meanwhile, T count and T table in medium category school were 1.353 and 2.034, respectively. T count and T table in low category school respectively 1.106 and 2.068. Analysis of T-test results in medium and low school categories can be written -T table < T count < T table, is means there is no significant differences between the critical thinking skills of female and male students. Thus, guided discovery-based thermochemistry modules are effectively applied to high, medium and low school categories
THE DEVELOPMENT OF WORKSHEET IN THE EXPERIMENT OF CREATING INDICATOR PAPERS
Get PDFThis study aimed to describe the worksheet's appearance and analyze the worksheet's validation test result based on POE (Predict, Observe, Explain). This research's objectives were to describe the development of a worksheet used in creating indicator papers from Aerva sanguinolenta plants and analyze the feasibility test result on its format. The stages of developing worksheets consist of preparation (define) the stage by analyzing research literature on indicator papers from Aerva sanguinolenta, planning stage by designing laboratory activities in worksheets, and development stage by conducting trials on worksheet products. The worksheet's feasibility was then tested. The results were validated with the average r-count value from the validators of 0.92, the average feasibility value percentage of 92%, the average r-count value from the students of 0.93, and the average feasibility value percentage of 93%. Therefore, the worksheet can be used as a learning aid for students in conducting experiments
GREEN CHEMISTRY-BASED EXPERIMENTS AS THE IMPLEMENTATION OF SUSTAINABLE DEVELOPMENT VALUES
Get PDFThe development of a chemistry experiment based on green chemistry aims to train and familiarize students to save on the use of chemicals, replace them with safer materials and minimize waste generated from experimental activities. Research and development methods are used to develop experimental modules based on green chemistry. The stages of research and development consist of needs analysis, product development, and product testing. The developed experiment module, implements three principles of green chemistry, i.e. preventing waste, safer chemical planning and safe use of solvents. The feasibility test by expert judgement on the material and media obtained scores 91.9% and 94.7% respectively. The results of the trials in small groups and large groups showed that the developed module was feasible to use. Student perceptions after using the module show positive results. The conclusions from the results of the feasibility test and the trial conducted indicate that the green chemistry-based kinetics' module has good criteria and in accordance with the wishes and needs of students. In addition, the implementation of this module in the kinetics experiment succeeded in making students understand and apply the principles of green chemistry. As many as 90% of students realize that there is a relationship between the application of the principles of green chemistry and the educational paradigm for sustainable development. The use of kinetics' module based on green chemistry also saved the cost of experiment material requirements by 75% per year
PENGEMBANGAN LEMBAR KERJA SISWA BERBASIS PROBLEM BASED LEARNING PADA TOPIK IKATAN KIMIA
Get PDFMenguasai sains dan teknologi adalah kunci penting untuk menghadapi tantangan masa depan. Pendidikan sains memainkan peran penting dalam mempersiapkan siswa yang dapat berpikir kritis, kreatif, logis, dan mengambil inisiatif dalam memecahkan masalah. Penelitian ini bertujuan untuk menghasilkan lembar kerja siswa berbasis masalah pada topik ikatan kimia. Pada penelitian ini digunakan metode penelitian Research and Development (R&D) dengan model pengembangan 4-D yaitu terdiri dari tahap define, design, develop and disseminate. Instrumen pengumpulan data yang digunakan adalah lembar validasi dan angket praktikalitas. Lembar kerja yang dikembangkan divalidasi oleh enam orang ahli dan uji praktikalitas oleh 25 orang siswa SMA Negeri 1 Batang Kapas, Pesisir Selatan. Data yang diperoleh dianalisis dengan menggunakan Cohen’s Kappa Formula. Uji validitas menyatakan lembar kerja siswa yang dikembangkan memiliki kategori validitas yang sangat tinggi. Uji praktikalitas siswa tentang lembar kerja siswa yang dikembangkan menunjukkan kategori yang sangat tinggi dan uji praktikalias guru memperoleh kategori kepraktisan yang sangat tinggi. Penelitian ini menyimpulkan bahwa lembar kerja pembelajaran berbasis masalah pada topik ikatan kimia adalah valid dan dapat digunakan dalam kegiatan pembelajaran. Temuan ini juga menunjukkan bahwa lembar kerja siswa yang dikembangkan dapat meningkatkan minat siswa untuk belajar dan dapat membantu siswa untuk belajar secara mandiri
PENGARUH MEDIA MOBILE LEARNING DAN KEMAMPUAN METAKOGNITIF TERHADAP KETERAMPILAN PROSES SAINS SISWA
Get PDFPenelitian ini bertujuan untuk mengetahui pengaruh media mobile learning dan kemampuan metakognitif terhadap keterampilan proses sains siswa pada materi asam basa. Penelitian ini dilaksanakan di SMA Negeri 48 Jakarta dengan sampel penelitian sebanyak 40 siswa yang terdiri dari 20 siswa yang memiliki kemampuan metakognitif tinggi dan 20 siswa yang memiliki kemampuan metakognitif rendah yang dipilih dengan teknik multi stage random sampling. Metode penelitian yang digunakan adalah quasi eksperimen dengan desain treatment by level 2x2 dan data yang diperoleh dianalisis dengan anova dua jalur. Hasil pengujian diperoleh fhitung > ftabel (58,93 > 4,10) menunjukkan bahwa terdapat interaksi antara penggunaan media mobile learning dan kemampuan metakognitif; fhitung > ftabel (10,94 > 4,10) menunjukkan terdapat perbedaan keterampilan proses sains pada kelompok siswa yang menggunakan mobile learning dan pembelajaran tradisional; qhitung > qtabel (10,98 > 4,33) menunjukkan terdapat perbedaan keterampilan proses sains siswa yang menggunakan media mobile learning dengan siswa yang menggunakan pembelajaran tradisional pada kelompok siswa yang memiliki kemampuan metakognitif tinggi dan qhitung > qtabel (4,37 > 4,33) menunjukkan terdapat perbedaan keterampilan proses sains siswa yang menggunakan media mobile learning dan siswa yang menggunakan pembelajaran tradisional pada kelompok siswa yang memiliki kemampuan metakognitif rendah
ANALISIS INTEGRASI KEISLAMAN PADA MATERI KIMIA PANGAN (Sumber, Manfaat, dan Keterpahamannya)
Get PDFIntegrasi antara sains dengan Alquran menjadi topik yang terus berkembang di kalangan cendekiawan. Pembahasan mengenai dikotomi antara Alquran dan sains terus diperbincangkan. Beberapa cendekiawan menyatakan adanya hubungan erat antara sains dan islam. UIN Syarif Hidayatullah Jakarta sebagai transformasi dari Institut Agama Islam Negeri (IAIN) tidak dapat dipisahkan dari harapan pengintegrasian ilmu pengetahuan, salah satunya integrasi dengan keislaman. Implementasi integrasi keislaman perlu diterapkan dalam seluruh mata kuliah kimia. Penelitian ini bertujuan untuk menganalisis konten sains yang terintegrasi keislaman pada mata kuliah kimia pangan serta menguji keterpahaman konten tersebut. Metode yang digunakan adalah metode Four Steps Teaching Material Development (4 STMD) yang terdiri dari empat tahap, yaitu seleksi, strukturisasi, karakterisasi, dan reduksi. Penilaian yang dilakukan berupa validasi konten oleh ahli integrasi keislaman dan uji keterpahaman konten oleh 59 mahasiswa pendidikan kimia semester V. Hasil validasi materi diolah dengan menggunakan skala Guttman dan hasil uji keterpahaman diinterpretasikan berdasarkan kategori keterpaham teks menurut Rankin dan Culhane. Hasil validasi ahli didapatkan kumpulan konten kimia pangan valid dan layak digunakan, kemudian hasil uji keterpahaman konten didapatkan kategori tinggi sebesar 90% dengan kriteria konten mudah untuk dipahami. Berdasarkan hasil penelitian yang dilakukan didapatkan 10 indikator dengan tiga konsep utama yaitu karbohidrat, protein, dan lipid dengan aspek keislaman fokus pada ayat qauliyah (Alquran dan Hadits).    Â