A Hands-On Activity Incorporating the Threefold Representation on Limiting Reactant

González-Sánchez, Angélica M.; Ortiz-Nieves, Edgardo L.; Medina, Zuleika

doi:10.1021/ed4003783

Cited by 5 publications

(3 citation statements)

References 17 publications

(21 reference statements)

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“…Including the normalized gain scores of 3 levels of system thinking, which include analysis of components, synthesis of components, and implementation, are indicated at a low level, high level, and medium level, respectively, that can answer the research question, which is which modelbased inquiry activity can promote system thinking of grade 11 students on the buffer solution topic. System thinking made the most progress in the level of synthesis due to students' using LEGO as a model tool to virtualize the components and relations between components in the system as submicroscopic (Taber & Akpan, 2016;(González-Sánchez, Ortiz-Nieves, & Medina, 2014) and students' ability to implement knowledge into the realworld issue. The result from the student's self-evaluation questionnaire found that all three levels of system thinking were high-level.…”

Section: Discussionmentioning

confidence: 99%

“…The results emphasized that the LEGO model was a learning tool that allowed students to see the interaction between each component in systems and virtualization that was more than macroscopic, which is submicroscopic (Taber & Akpan, 2016;González-Sánchez, Ortiz-Nieves, & Medina, 2014). Students were also able to organize the elements of a buffer system within a framework of relationships, and the results also corresponded to Hmelo-Silver, Jordan, Eberbach, & Sinha (2017) using the combination of conceptual representation with inquiry and model-base as a tool to allow students to have system thinking.…”

Section: Appendixmentioning

confidence: 99%

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– The IAFOR International Conference on Education – Hawaii 2022 Official Conference Proceedings

2022

IICE Official Conference Proceedings

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In Indonesia, the development of e-commerce is increasing along with the increasing number of internet and social media users. The rapid growth of e-commerce has changed the way consumers make purchases of goods and services. The growth of electronic transactions has a very positive impact on business owners and consumers, because it provides convenience, ease, efficiency and low costs. However, electronic transactions can pose risks and uncertainties that can harm both consumers and entrepreneurs. This article aims to examine the educational values of e-commerce information technology for the protection of citizens. Digital citizenship is closely related in the way in which e-commerce information technology knowledge is mastered and practiced to make significant connections. To see digital education clearly, then clear knowledge about the application of new technologies as part of the government's recommendations for legal protection is needed. This is important because citizens who are educated with knowledge of e-commerce technology will be able to promote ethical values as a democratic society. In this way, the new space will be available not only as a digital reality but also as a full-fledged society needs.

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Section: Discussionmentioning

confidence: 99%

Section: Appendixmentioning

confidence: 99%

– The IAFOR International Conference on Education – Hawaii 2022 Official Conference Proceedings

2022

IICE Official Conference Proceedings

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“…Chemistry is one of the branches of physical science that requires an in-depth understanding of macroscopic, submicroscopic, and symbolic representations to explain natural phenomena. − Many concepts in chemistry are used as learning activities to promote students’ understanding of the three levels of representation. − However, research has found that many students face difficulty and still hold misconceptions because they cannot link multiple levels of representation, especially the representation at the submicroscopic level. − This indicates that teaching and assessing chemistry in the three levels of representation is still a challenging task for chemistry teachers that needs to be reconsidered and addressed. , …”

Section: Introductionmentioning

confidence: 99%

Fruit Puzzle: An Inquiry-Based Activity to Investigate High School Students’ Understanding of the Relationship between the Concepts of Density and Concentration of Solution at the Submicroscopic Level

2022

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A simple inquiry-based activity called “Fruit Puzzle” was designed to investigate high school students’ understanding of the relationship between the concepts of density and solution concentration at a submicroscopic level. The first activity allowed students to predict whether five types of fruit would sink or float in water and asked them to explain the reason for their prediction. This activity aims to investigate their prior knowledge of the concept of density. Then, the students were asked to experiment and observe the result. In the second activity, students were challenged to design and perform an experiment to compare the density of each type of fruit using table salt or sugar and water. Finally, in the third activity, students were tasked with designing a method that would allow the fruit to stay in the solution without sinking or floating. Two postlaboratory questions were used to investigate how students could relate the concept of density to the solution concentration at both the submicroscopic and symbolic levels. The sample size of this study was 98 Thai students in grade 9. The results from the activity sheet showed that students could relate the concept of density with the sink and float phenomenon in the prediction activity and could relate the concept of density with the concentration of the solution in the experiment-planning step. However, the results from the postlaboratory questions indicated that the students still found it difficult to explain the concepts at both the submicroscopic and symbolic levels.

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Implementation of physics mobile learning media to improve student physics perseverance

Almubarak

Rusmansyah

2020

J. Phys.: Conf. Ser.

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The development of learning media is an alternative way to help students better in understanding the material. For learning chemistry, students not only need knowledge but the way to understand students’ cognitive scientifically and their interpretations of thinking about the problem and human life. The research aimed to develop a learning media as a source of learning so that students get more in the learning process. The research method was Research and Development (R&D) by adopting the ADDIE model (Analysis, Design, Development, Implementation, Evaluation), where the product has been developed as a dictionary with the concept of representational triplet in chemistry (macroscopic, sub-microscopic, and symbol). The data collection techniques were test, observation, and questionnaire techniques, while the obtained data were descriptively analysed and N-gain test was calculated to observe student learning progress. The results revealed that understanding chemistry in representation through learning media, i.e. dictionary, can give students an overview of aspects of epistemology and their relationship to their beliefs. That is, validity, practicality, and effectiveness are not only limited to fulfilling the feasibility of a product but how it constructed their preconceptions to be scientific and contextual concepts through the product.

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A Hands-On Activity Incorporating the Threefold Representation on Limiting Reactant

Cited by 5 publications

References 17 publications

– The IAFOR International Conference on Education – Hawaii 2022 Official Conference Proceedings

– The IAFOR International Conference on Education – Hawaii 2022 Official Conference Proceedings

Fruit Puzzle: An Inquiry-Based Activity to Investigate High School Students’ Understanding of the Relationship between the Concepts of Density and Concentration of Solution at the Submicroscopic Level

Implementation of physics mobile learning media to improve student physics perseverance

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