The macroscopic, submicroscopic and symbolic level in explanations of a chemical reaction provided by thirteen-year olds
Апстракт
The aim of this research was to investigate whether pupils aged 13, at the end of their first year of studying chemistry, are capable of perceiving the macroscopic and the submicroscopic level of the previously learned contents on chemical reactions, and whether they relate them to the chemical equations (the symbolic representation). Another aim was to establish how much demonstration experiments contribute to a better linking of the mentioned levels. The research featured 69 pupils of the seventh grade from three primary schools. The pre-test was conducted, following which experiments were demonstrated, and the post-testing was carried out in the end. After the intervention, a total of 12 pupils were interviewed about which aspects of chemical reactions they thought of based on the chemical equations. A statistically significant difference in two out of five requirements of the post-test, compared to the pre-test, indicate that the demonstration experiments may contribute to a better... linking of three levels of representing chemical reactions. However, when one compares the pupils' answers in the test and in the interview, it can be observed that the correct answers in the test are not always based on understanding the concepts in connection with the chemical reaction.
Кључне речи:
chemical reaction / chemical equation / demonstration experiment / primary schoolИзвор:
Journal of the Serbian Chemical Society, 2018, 83, 10, 1177-1192Издавач:
- Serbian Chemical Soc, Belgrade
Финансирање / пројекти:
- Теорија и пракса науке у друштву: мултидисциплинарне, образовне и међугенерацијске перспективе (RS-MESTD-Basic Research (BR or ON)-179048)
DOI: 10.2298/JSC171220055T
ISSN: 0352-5139
WoS: 000448804500009
Scopus: 2-s2.0-85056241573
Колекције
Институција/група
Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Trivić, Dragica AU - Milanović, Vesna D. PY - 2018 UR - https://cherry.chem.bg.ac.rs/handle/123456789/2238 AB - The aim of this research was to investigate whether pupils aged 13, at the end of their first year of studying chemistry, are capable of perceiving the macroscopic and the submicroscopic level of the previously learned contents on chemical reactions, and whether they relate them to the chemical equations (the symbolic representation). Another aim was to establish how much demonstration experiments contribute to a better linking of the mentioned levels. The research featured 69 pupils of the seventh grade from three primary schools. The pre-test was conducted, following which experiments were demonstrated, and the post-testing was carried out in the end. After the intervention, a total of 12 pupils were interviewed about which aspects of chemical reactions they thought of based on the chemical equations. A statistically significant difference in two out of five requirements of the post-test, compared to the pre-test, indicate that the demonstration experiments may contribute to a better linking of three levels of representing chemical reactions. However, when one compares the pupils' answers in the test and in the interview, it can be observed that the correct answers in the test are not always based on understanding the concepts in connection with the chemical reaction. PB - Serbian Chemical Soc, Belgrade T2 - Journal of the Serbian Chemical Society T1 - The macroscopic, submicroscopic and symbolic level in explanations of a chemical reaction provided by thirteen-year olds VL - 83 IS - 10 SP - 1177 EP - 1192 DO - 10.2298/JSC171220055T ER -
@article{ author = "Trivić, Dragica and Milanović, Vesna D.", year = "2018", abstract = "The aim of this research was to investigate whether pupils aged 13, at the end of their first year of studying chemistry, are capable of perceiving the macroscopic and the submicroscopic level of the previously learned contents on chemical reactions, and whether they relate them to the chemical equations (the symbolic representation). Another aim was to establish how much demonstration experiments contribute to a better linking of the mentioned levels. The research featured 69 pupils of the seventh grade from three primary schools. The pre-test was conducted, following which experiments were demonstrated, and the post-testing was carried out in the end. After the intervention, a total of 12 pupils were interviewed about which aspects of chemical reactions they thought of based on the chemical equations. A statistically significant difference in two out of five requirements of the post-test, compared to the pre-test, indicate that the demonstration experiments may contribute to a better linking of three levels of representing chemical reactions. However, when one compares the pupils' answers in the test and in the interview, it can be observed that the correct answers in the test are not always based on understanding the concepts in connection with the chemical reaction.", publisher = "Serbian Chemical Soc, Belgrade", journal = "Journal of the Serbian Chemical Society", title = "The macroscopic, submicroscopic and symbolic level in explanations of a chemical reaction provided by thirteen-year olds", volume = "83", number = "10", pages = "1177-1192", doi = "10.2298/JSC171220055T" }
Trivić, D.,& Milanović, V. D.. (2018). The macroscopic, submicroscopic and symbolic level in explanations of a chemical reaction provided by thirteen-year olds. in Journal of the Serbian Chemical Society Serbian Chemical Soc, Belgrade., 83(10), 1177-1192. https://doi.org/10.2298/JSC171220055T
Trivić D, Milanović VD. The macroscopic, submicroscopic and symbolic level in explanations of a chemical reaction provided by thirteen-year olds. in Journal of the Serbian Chemical Society. 2018;83(10):1177-1192. doi:10.2298/JSC171220055T .
Trivić, Dragica, Milanović, Vesna D., "The macroscopic, submicroscopic and symbolic level in explanations of a chemical reaction provided by thirteen-year olds" in Journal of the Serbian Chemical Society, 83, no. 10 (2018):1177-1192, https://doi.org/10.2298/JSC171220055T . .