Exploring materials locally available to teach chemistry experimentally in developing countries

Quive, Lucas Gil; Leandro, Sérgio; Bandali, Esaú Carlos; Gueze, Geraldo Alfredo; João, Domingos Augusto; Gomundanhe, Almeida Meque; Neuana, Neuana Fernando; Macuvele, Domingos Lusitâneo Pier

doi:10.1016/j.ece.2020.09.004

Cited by 4 publications

(6 citation statements)

References 11 publications

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“…Studies have also shown that the teaching of natural sciences using low-cost materials that contextualize the knowledge acquired in the classroom with everyday life improves learning . Also, studies agree that the preparation of experimental classes using alternative and easily accessible materials solidifies learning, as they link knowledge to daily life …”

Section: Introductionmentioning

confidence: 91%

“…However, one of the problems that most developing countries face in science, technology, engineering, and mathematics (STEM) education is the lack of materials and conventional reagents for practical classes and demonstrations. 15 The National Curriculum Guidelines for Basic Education determine that "the pedagogical principles of identity, diversity, autonomy, interdisciplinarity, and contextualization are adopted as structuring the curricula". 16 Following this line of thought, science teaching has sought, even if timidly, to present itself in an increasingly contextualized way seeking to involve science, technology, and society (STS).…”

Section: ■ Introductionmentioning

confidence: 99%

“…21 Also, studies agree that the preparation of experimental classes using alternative and easily accessible materials solidifies learning, as they link knowledge to daily life. 15 Therefore, this study resulted in the elaboration of a forensic educational tool that arises as a proposal to be used as a practical activity in secondary schools. It consists of a breathalyzer built with low-cost materials and a colorimetric palette to be used as a way to calculate an approximate ethanol concentration in alcoholic samples.…”

Section: ■ Introductionmentioning

confidence: 99%

“…According to Gecolea and Amon, science teachers must eliminate the abstract quality of science by using true, fundamental, and reasoned instructional resources derived from the natural environment. However, one of the problems that most developing countries face in science, technology, engineering, and mathematics (STEM) education is the lack of materials and conventional reagents for practical classes and demonstrations …”

Section: Introductionmentioning

confidence: 99%

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Forensic Educational Tool as a Teaching Strategy to Face the Growing Alcohol Consumption in the Student Population

2023

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Excessive alcohol consumption in adolescence is a worldwide concern because of its numerous negative consequences. It also increases the chance of accidents and may lead to significant impairment of part of the brain, causing learning difficulties. The present work aims to present the development of a forensic educational kit composed of a breathalyzer produced with low cost materials and a colorimetric palette for use in science classes for high school students. The kit’s function is to estimate the ethanol concentration in alcoholic samples. The methodology is based on applied research with a qualitative and quantitative nature guided by an experimental procedure that presents all steps from the construction of the kit to its functionality. It also describes three didactic-pedagogical strategies on how this instrument may be used in the teaching-learning process. The results of this proposal show that, during the operation of the device, it is possible to observe a correlation with physical, chemical, biological, and mathematical concepts involving relations between science, technology, society, and environment (CTSE), which may be approached in a contextualized way and arouse student curiosity. In addition, the topic of this study provides an educational action since it enables a discussion of the impacts of ethanol on the body, raising awareness about the alarming use of alcoholic beverages. The implementation of interdisciplinary activities on the topic here is a fundamental strategy for the education of a citizen capable of developing a critical view of social events and the use of technologies.

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Section: Introductionmentioning

confidence: 91%

Section: ■ Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Forensic Educational Tool as a Teaching Strategy to Face the Growing Alcohol Consumption in the Student Population

2023

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“…Learning resources should be compiled according to their users' needs, namely, the users' geographical, ethnographic, and regional-prosperity background. Besides, the selection of learning resources should be based on local potential [25], [26], and local problems [27], [28].…”

Section: Introductionmentioning

confidence: 99%

Pre-service biology teacher’s perception on local environment problems as contextual learning resources

Yani

Amin

Rohman

et al. 2021

IJERE

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A survey and exploratory study were conducted to analyze Lake Tempe as a resource for contextual learning (CTL). The first phase of the study included exploring the lake’s potential through interviews with the people who live in the lake’s coastal region. Quadrat transects were done to identify aquatic plants around the lake. A feasibility analysis was conducted to see the lake’s potential as a learning resource. Field data were collected and compared to the environmental biology (EB) curriculum, responses, and learning outcome. The data were analyzed descriptively and tested using a paired-sample t-test. The results showed differences in the three stations’ physicochemical parameters and decreased quality of the water. It was found that anthropogenic activity had a significant contribution to the lake’s pollution. Nine species of six aquatic plant families were found in the lake. The survey revealed that the lake was feasible as a learning resource with criteria easy to access, safety, time efficiency, costs, and the material's suitability for EB courses. The t-test showed a difference in the students’ scores between before and after exploration practices. These findings suggest that Lake Tempe<em> </em>can serve as a resource for CTL in EB courses.

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Application of ICP-MS in the Innovation and Practice of Instrument Analysis Course - Taking the Determination of Cesium in Soil as an Example

Li,

Liu,

et al. 2024

SHS Web of Conf.

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Instrumental analysis is an important part of analytical chemistry, which plays a crucial role in cultivating the experimental operation ability of students in disciplines such as environment, geology, and medicine. Inductively coupled plasma mass spectrometry (ICP-MS) is currently an irreplaceable basic equipment in inorganic element analysis, and incorporating it into experimental teaching content is a requirement of the times. However, there is still a lack of application in this area. This article focuses on the graduate course “Modern Detection Technology”. The experimental course adopts a mixed teaching mode of pre class theoretical guidance and in class emphasis on practical operation. It combines theoretical and practical teaching organically, and takes the current hot topic of radioactive pollution as the problem orientation. The teaching mainly focuses on analyzing experimental design, instrument operation and use, sample measurement and result analysis, etc. The teaching mode and content of ICP-MS continuously explored to improve the quality of experimental teaching and enable students to comprehensively enhance their basic skill knowledge, scientific research literacy, and innovation awareness.

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Exploring materials locally available to teach chemistry experimentally in developing countries

Cited by 4 publications

References 11 publications

Forensic Educational Tool as a Teaching Strategy to Face the Growing Alcohol Consumption in the Student Population

Forensic Educational Tool as a Teaching Strategy to Face the Growing Alcohol Consumption in the Student Population

Pre-service biology teacher’s perception on local environment problems as contextual learning resources

Application of ICP-MS in the Innovation and Practice of Instrument Analysis Course - Taking the Determination of Cesium in Soil as an Example

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