scholarly journals Identification of High School Students' Understanding on the Reaction Rate Change During Chemical Equilibrium Shift

2007 ◽  
Vol 51 (4) ◽  
pp. 365-374 ◽  
Keyword(s):  
High School ◽  
High School Students ◽  
Chemical Equilibrium ◽  
Reaction Rate ◽  
Rate Change ◽  
School Students ◽  
Equilibrium Shift

scholarly journals High school students’ scientific argumentation on chemical equilibrium

2021 ◽  
Author(s):  
Muntholib Muntholib ◽  
Asmi’ Munadhiroh ◽  
Nur Candra Eka Setiawan ◽  
Yahmin Yahmin
Keyword(s):  
High School ◽  
High School Students ◽  
Chemical Equilibrium ◽  
Scientific Argumentation ◽  
School Students

scholarly journals PENGEMBANGAN BAHAN AJAR KIMIA RINTISAN SMA BERTARAF INTERNASIONAL KELAS XI MATERI LAJU REAKSI

2012 ◽  
Vol 13 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Inova Putri Carera ◽  
I Wayan Dasna
Keyword(s):  
High School ◽  
High School Students ◽  
Reaction Mechanism ◽  
Reaction Rate ◽  
Reaction Order ◽  
Average Score ◽  
School Students ◽  
Factors Affecting ◽  
Rate Law

This study was aimed to develop teaching materials about chemical reaction rate which covered materials adapted to A-Level High School students of grade XI in Pioneer International Standard High School (RSMA-BI). The developmental research was adopting the instructional development model 4D which include four stages of development, namely define, design, develop, and disseminate. Instructional materials were written in English consist of seven topics titled: Reaction Rate Concept, The Exchange's Expressions, Rate Law and Reaction Order, Experimental Determination of a Rate Law, Reaction Mechanism, Theories of Reaction Rate, Factors Affecting Reaction Rate. Results of content validation from content experts obtained the average score of 3. 56 of 14 range of scores which means valid / good / decent. Test limited to high school students of RSBI obtained an average score of 3.35 (valid / good / decent). The results of the use of teaching materials obtained a score of 77.8 which is above the minimal passing grade (75). Therefore it can be concluded that the materials were feasible to be used in the classroom.Penelitian ini bertujuan untuk mengembangkan bahan ajar laju reaksi dengan cakupan materi yang disesuaikan dengan A-Level untuk siswa kelas XI Rintisan Sekolah Menengah Atas Bertaraf Internasional (RSMA-BI. Rancangan penelitian pengembangan mengadaptasi model pengembangan bahan ajar Model 4D yang meliputi empat tahap pengembangan, yaitu define, design, develop dan disseminate. Produk pengembangan adalah bahan ajar kimia RSMA-BI kelas XI materi laju reaksi yang ditulis dalam bahasa Inggris menggunakan pendekatan kontekstual. Bahan ajar terdiri atas empat bagian utama yaitu pendahuluan, materi, evaluasi dan penutup. Materi tersusun atas tujuh sub materi yaitu Reaction Rate Concept, The Rates Expressions, Rate Law and Reaction Order, Experimental Determination of a Rate Law, Reaction Mechanism, Theories of Reaction Rate, Factors Affecting Reaction Rate. Hasil validasi isi dari ahli materi diperoleh nilai rata-rata 3,56 dari rentang skor 1-4 dengan kriteria valid/baik/layak. Hasil uji terbatas pada siswa SMA RSBI diperoleh nilai rata-rata 3,35 dari rentang skor 1-4 dengan kriteria valid/baik/layak. Hasil uji penggunaan bahan ajar diperoleh skor sebesar 77,8. Skor ini diatas SKM (Skor Kelulusan Minimal) yaitu 75 sehingga dapat disimpulkan bahwa bahan ajar telah layak dan dapat digunakan dalam pembelajaran di kelas.

scholarly journals Assessment: A Suggested Strategy for Learning Chemical Equilibrium

2019 ◽  
Vol 9 (3) ◽  
pp. 174 ◽  
Author(s):  
Andres Bernal-Ballen ◽  
Yolanda Ladino-Ospina
Keyword(s):  
High School ◽  
High School Students ◽  
Chemical Equilibrium ◽  
Learning Strategy ◽  
Assessment Instruments ◽  
School Students ◽  
Suggested Strategy ◽  
Equilibrium Concentrations ◽  
The Impact ◽  
Time Assessment

Chemical equilibrium is listed as one of the most complicated concepts to learn, and the origin of this phenomenon is attributed to misconceptions, teaching-related problems, and the use of inappropriate didactic approaches. At the same time, assessment is a crucial fragment of educational activities although its relevance as a learning strategy is underestimated. For that reason, we designed and applied unique assessment approaches related to chemical equilibrium to 33 high school students at Colegio Mayor de San Bartolome (Bogotá, Colombia). The results suggested that assessment instruments focused on the identified misconceptions might reduce the impact (of the misconceptions), and students were able to build concepts related to chemical equilibrium whilst they were being assessed. Problems associated with forward and reverse reactions, differences between initial and equilibrium concentrations, and the indiscriminate use of Le Chatelier’s principle were approached by students and significant improvement was achieved through the assessment. Changes associated with assessment perceptions were accomplished and the proposed strategy suggests that it is plausible to learn during the assessment moment.

scholarly journals Effectiveness of Dual Situated Learning Model in Improving High School Students’ Conceptions of Chemistry Equilibrium and Preventing Their misconceptions

2020 ◽  
Vol 3 (2) ◽  
pp. 99-105
Author(s):  
Muhammad Ali Kurniawan ◽  
Sri Rahayu ◽  
Fauziatul Fajaroh ◽  
Saeed Almuntasheri
Keyword(s):  
High School ◽  
High School Students ◽  
Situated Learning ◽  
Chemical Equilibrium ◽  
Learning Model ◽  
Positive Influence ◽  
School Students ◽  
Significant Difference ◽  
Science Educators ◽  
The Impact

This study aims to compare the impact of the Dual Situated Learning Model (DSLM) and conventional instructions in improving High School Students’ understanding of chemical equilibrium concepts and the prevention of possible misconceptions. The study utilized a quasi-pretest-posttest control and experimental group design with two classes of XI SMAN as the research sample (N=60 students). Pre-posttests consisting of 12 two-tier questions (r = 0.691) used to assess the learners’ understanding of the chemical equilibrium. The results showed a significant difference in favor of the learners who taught using the DSLM model in comparison to those in the conventional approaches (Fount = 4.149; p = 0.003). Students in the experimental class had a better understanding and fewer misconceptions about the concept of chemical equilibrium. Implications for science educators suggest that learning that is designed by considering students' misconceptions or preconceptions and anticipating them through appropriate learning steps will have a positive influence on the learners’ conceptual understanding.

scholarly journals PENGEMBANGAN INSTRUMEN PENDETEKSI MISKONSEPSI KESETIMBANGAN KIMIA PADA PESERTA DIDIK SMA

2013 ◽  
Vol 15 (2) ◽  
pp. 232-249 ◽  
Author(s):  
Das Salirawati
Keyword(s):  
High School ◽  
High School Students ◽  
Chemical Equilibrium ◽  
Group Discussion ◽  
Expert Judgment ◽  
Senior High School ◽  
Choice Test ◽  
School Students ◽  
Feasibility Test ◽  
Senior High School Students

Tujuan penelitian ini adalah mengembangkan dan meng-hasilkan produk berupa Instrumen Pendeteksi Miskonsepsi Ke-setimbangan Kimia (IPMKK) pada peserta didik kelas XI SMA dengan uji kualitas IPMKKK berdasarkan expert judgment melalui Forum Group Discussion (FGD) dilanjutkan analisis Teori Res-pons Butir (TRB) tiga parameter dan uji fisibilitas penggunaan IPMKK. Penelitian ini merupakan penelitian pengembangan dengan model prosedural mengadaptasi prosedur pengembang-an Borg & Gall. Hasil analisis kebutuhan (need assessment) dan kaji pustaka dipilih materi pokok kesetimbangan kimia dan instrumen berbentuk tes pilihan ganda dengan alasan setengah-terbuka. Simpulan hasil penelitian ini adalah telah berhasil di-kembangkan IPMKK pada peserta didik kelas XI SMA. Hasil uji fisibilitas menunjukkan bahwa guru-guru kimia SMA tidak mengalami kesulitan dalam menerapkan IPMKK dan dapat mengikuti cara menganalisis data dengan mudah. IPMKK yang diterapkan di lapangan dapat mendeteksi terjadinya miskonsepsi kimia, yaitu miskonsepsi tipe Mi-1 sebesar 13,84% dan tipe Mi-2 sebesar 18,43% untuk tingkat Provinsi DIY.Kata kunci: pengembangan instrumen, miskonsepsi, kesetimbangan kimia______________________________________________________________ DEVELOPMENT OF A DETECTING INSTRUMENT CHEMICAL EQUILIBRIUM MISCONCEPTION OF SENIOR HIGH SCHOOL STUDENTS Abstract This research is aimed at developing a product in the form of a Chemical Equilibrium Misconception Detecting Instrument or IPMKK for Grade XI senior high school students to investigate the quality of IPMKK based on the expert judgment using the Focus Group Discussion (FGD), continued with an analysis using the three-parameter Item Response Theory (IRT) and the feasibility of IPMKK imple-mentation in the field. This research was a research and development study using the procedural model, adapted from Borg & Gall model. The development of the product began by conducting the needs assessment and the literature review to choose a  chemical equilibrium and multiple choice test with half-open reason as the instrument to be developed. Findings suggest that this research succeeds in developing a Chemical Equilibrium Misconception Detecting Instrument (IPMKK) for Grade XI senior high school students. The feasibility test suggests that Senior High School chemistry teachers do not have difficulty in implementing the instrument and can conduct the data analysis easily. The implementation of the instrument in the DIY province detected that there was M1i-1 chemistry misconception by 13.84% Mi-1 and Mi-2 by 18.43%.Keywords: instrument development, misconception, chemical equilibrium

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