Quantitative Analysis in the General Chemistry Laboratory: Training Students To Analyze Individual Results in the Context of Collective Data

2011 ◽  
Vol 88 (7) ◽  
pp. 979-982 ◽  
Author(s):  
Chris D Ling ◽  
Adam J Bridgeman
Keyword(s):  
General Chemistry ◽  
Quantitative Analysis ◽  
Chemistry Laboratory ◽  
General Chemistry Laboratory ◽  
Collective Data ◽  
Laboratory Training

Measuring the effectiveness of online preparation videos and questions in the second semester general chemistry laboratory

2021 ◽  
Author(s):  
Sara Altowaiji ◽  
Rakahn Haddadin ◽  
Priscilla Campos ◽  
Shannon Sorn ◽  
Lizbeth Gonzalez ◽  
...  
Keyword(s):  
General Chemistry ◽  
Cognitive Domain ◽  
Chemistry Laboratory ◽  
General Chemistry Laboratory ◽  
Hispanic Serving Institution ◽  
Video Lectures ◽  
Potential Benefits ◽  
Hispanic Serving ◽  
Laboratory Experiences ◽  
Stressful Environments

Chemistry laboratory experiences provide students the opportunity to engage all three domains of learning: psychomotor, cognitive and affective. However, they are often stressful environments where students are expected to quickly learn new laboratory techniques, and collect data in a short amount of time. In principle, providing additional preparation activities should help students be better prepared to successfully complete the lab. These activities should lead to more meaningful interactions with the lab instructor and better performance on lab outcomes. In this study, we report the usefulness and effectiveness of online preparation activities for students that include video lectures demonstrating the labs that the students will participate in, and preparation questions that mimic data analysis for the lab. These online prelab activities were implemented in the second semester general chemistry laboratory at a large Hispanic serving institution in the southwestern United States. Over three semesters, students enrolled in this course were surveyed using the Meaningful Learning in the Laboratory Instrument (MLLI) to assess their lab expectations as well as author generated post-lab surveys to assess the usefulness of the prelab activities. Additionally, lab instructors were surveyed on their perception of the efficacy of the additional preparation activities. Findings suggest that both students and instructors agree that having access to these materials as a part of a portfolio of resources, including the lab manual, help them better prepare for the lab. Although students’ expectations on the cognitive domain decreased after a semester of instruction, questions related to comfort with lab equipment show improvements in the affective domain for students with access to the additional preparation activities. Lastly we found that both students and instructors see a lot of value and benefits in having these types of prelab activities available as a way to help prepare students for the upcoming laboratory sessions. In general, the potential benefits that prelab activities had on students outweigh the modest effort to create these materials.

scholarly journals Experimentação na educação química: elaboração de sinais em libras para práticas de laboratório

2018 ◽  
Vol 2 (1) ◽  
pp. 41
Author(s):  
Geilson Rodrigues Da Silva ◽  
Talina Meirely Nery Dos Santos ◽  
Griscele Souza De Jesus ◽  
Lucas Pereira Gandra
Keyword(s):  
General Chemistry ◽  
Content Analysis ◽  
Quantitative Analysis ◽  
Bilingual Education ◽  
Sign Language ◽  
Chemistry Laboratory ◽  
Deaf People ◽  
Scientific Concepts ◽  
Deaf Students ◽  
Brazilian Sign Language

Resumo: A Química é uma Ciência com poucos sinais específicos em Língua Brasileira de Sinais para o ensino de pessoas com surdez. Essa barreira de linguagem pode ocasionar obstáculos de aprendizagem aos estudantes surdos. Sendo assim, a presente pesquisa teve como objetivos catalogar verbetes e criar sinais para a utilização em aulas práticas de Química. Para coleta de dados foram levantados os termos na literatura no dicionário ilustrado trilíngue que possuíssem relações com a disciplina de Química, ao qual foram categorizados a partir da Análise de Conteúdo, em função do seu emprego e utilização. Realizou-se a análise quantitativa dos termos mais presentes em roteiros de aulas experimentais, usadas na disciplina de Química Geral e Experimental Ida Licenciatura em Química do IFMS campus Coxim. Sendo elaborados quatro sinais de instrumentos do laboratório de Química que apresentam potencial para serem utilizados em práticas bilíngues, no ensino superior e médio.Palavras-chave: Educação Bilíngue; Formação de Conceitos Científicos; Práticas Experimentais. Experimentation in chemical education: elaboration signals in libras for laboratory practicesAbstract: Chemistry is a Science with few specific signs in Brazilian Sign Language for teaching deaf people. This language barrier can lead to learning obstacles for deaf students. Thus, the present research had as objectives to catalog entries and to create signals for the use in practical classes of Chemistry. In order to collect data, the terms in the literature in the trilingual illustrated dictionary that had relations with the discipline of Chemistry were categorized from the Content Analysis, according to their use and use. A quantitative analysis of the most present terms was carried out in experimental classes, used in the General Chemistry and Experimental I subject of the Chemistry Degree of the IFMS campus Coxim. Four signs of chemistry laboratory instruments are being developed, which have the potential to be used in bilingual practices in higher and secondary education.Keywords: Bilingual Education; Formation of Scientific Concepts; Experimental Practices. 

Teaching Electrochemistry in the General Chemistry Laboratory through Corrosion Exercises

2018 ◽  
Vol 95 (5) ◽  
pp. 842-846 ◽  
Author(s):  
Richard W. Sanders ◽  
Gregory L. Crettol ◽  
Joseph D. Brown ◽  
Patrick T. Plummer ◽  
Tara M. Schendorf ◽  
...  
Keyword(s):  
General Chemistry ◽  
Chemistry Laboratory ◽  
General Chemistry Laboratory
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