scholarly journals Results of an Interview Study as Basis for the Categorization of Chemistry Students into Conceptual and Algorithmic Problem Solvers

2008 ◽  
Vol 2 (2) ◽  
Author(s):  
A E Okanlawon
2019 ◽  
Vol 7 (1) ◽  
pp. 1599-1615
Author(s):  
Faridah Lausin

The lack of conceptual understanding of Stoichiometry among high school students is a concern not only because it is a significant predictor of performance in college Chemistry but also because it reflects the need for instructional methods that teach students to use skills beyond mere rote memorization and algorithmic problem-solving.  Studies have shown that a more visual pedagogical approach to teaching Stoichiometry could effectively advance student conceptual understanding of Stoichiometry. The purpose of this quantitative study was to investigate the effects of using a visual-based instructional strategy on the conceptual understanding of Stoichiometry among thirteen tenth-grade Chemistry students at AIMS, Saraburi, Thailand.  The approach involved systematic and extensive use of particle diagrams in their learning of four selected concepts underlying stoichiometry. The study further examined the attitudes of the students towards the method.    The study employed the one- group pre-test post-test design.  A Conceptual Stoichiometry Test (CST) designed by Kimberly and Yezierski (2015) and an Attitude Towards the Use of Particle Diagrams (ATPD) questionnaire developed by the researcher with the help of chemistry experts were the instruments used to collect data. Data were analyzed using the paired-sample t-test.  Key results indicate that the approach had a significant effect on the students’ conceptual understanding of stoichiometry and that they had a favorable attitude towards the use of the method.  It is recommended that chemistry teachers should be proactive and innovative in adopting research-based teaching strategies that support conceptual understanding.


2011 ◽  
Author(s):  
Anna Dorothea Ursula Moellering ◽  
David Schiefer
Keyword(s):  

1970 ◽  
Vol 83 (3, Pt.1) ◽  
pp. 431-434
Author(s):  
Theodore R. Dixon ◽  
Alan E. Moulton

EDUSAINS ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 201-211
Author(s):  
Yenni Kurniawati ◽  
Yuni Fatisa

Abstract Modeling and laboratory simulation can help overcome of cost obstacle, time, safety and other constraints in laboratory experiments. Many skills also had the opportunity to be fostered and promoted, especially in connection with the construction of thinking skills. However, the implementation of this program required an evaluation, in order to decided whether the program will be continuing or not, in addition its needed to found the focused of on overall quality of learning in order to make a recommendation in the decision making. This research was conducted by the mixed-method approached with triangulation design, in order to evaluate the effectiveness, problems or any obstacles of the implementation of the program. The population in this study was the third semester of pre-service chemistry students at UIN Syarif Kasim Sultan Riau, which was supported by lecturers, assistant laboratory and staf. The sample selection was done using random sampling techniques. Program evaluation in this study was conducted by the CIPP model (Context, Input, Process, Product). The results showed that the program was running quite effective when viewed from the overall average grades. The evaluation about context, inputs, processes and products had the good and very good score, in which the evaluation score of context and input, get the better score than process and product evaluation. This study recommends to be a continuing improvement program of modeling and simulation laboratories, both as an exercise before the experiments or replace the real experiments. Keywords: modeling; simulation lab; chemistry experiment Abstrak Pemodelan dan simulasi laboratorium dapat membantu mengatasi kendala biaya, waktu, alasan keselamatan dan kendala lainnya dalam praktikum di laboratorium kimia. Beragam kemampuan lain juga berkesempatan untuk ditumbuh-kembangkan terutama dalam kaitannya dengan konstruksi berfikir. Meskipun demikian, implementasi pelaksanaan program ini memerlukan evaluasi, guna memutuskan apakah program ini layak dilanjutkan ataukah tidak, selain karena diperlukannya penemuan terhadap fokus peningkatan kualitas pembelajaran secara menyeluruh guna menghasilkan rekomendasi dalam menentukan keputusan. Penelitian ini dilakukan dengan menggunakan pendekatan mixed-method desain triangulasi, guna mengevaluasi sebab-sebab efektifitas, kendala ataupun kegagalan pelaksanaan program. Populasi dalam penelitian ini adalah mahasiswa semester III jurusan Pendidikan Kimia UIN Sultan Syarif Kasim Riau, yang didukung oleh dosen, asisten laboratorium dan laboran dan pemilihan sampel dilakukan menggunakan teknik random sampling. Evaluasi program dalam penelitian ini dilakukan menggunakan model CIPP (Context, Input, Process, Product). Hasil penelitian menunjukkan bahwa program ini berjalan cukup efektif jika dilihat dari rata-rata keseluruhan nilai, mulai dari context, input, proses dan produk yang berada pada skor baik dan sangat baik, di mana skor evaluasi context dan input, lebih baik dibanding proses dan produk. Penelitian ini memberikan rekomendasi untuk terus meningkatkan penggunaan pemodelan dan simulasi laboratorium kimia, baik sebagai latihan sebelum praktikum maupun menggantikan praktikum yang sesungguhnya. Kata Kunci: pemodelan; simulasi laboratorium; praktikum kimia  Permalink/DOI: http://dx.doi.org/10.15408/es.v8i2.4394  


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