Thinking about the Chemical Substances through Real-life Incidents: A Case Study on Pre-service Teachers' Knowledge on Various Dimensions of Laboratory Safety


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Akkuzu Güven N., Uyulgan M. A.

Educational Policy Analysis and Strategic Research, cilt.17, sa.3, ss.263-291, 2022 (Hakemli Dergi)

Özet

Pre-service teachers who conduct experiments are faced with various risks in terms of physical, health

and environment due to the chemicals they are exposed to in the laboratory classes. Working in a

laboratory without knowing these risks causes accidents such as chemical spills, explosions and fires,

and even individual injuries. For this reason, pre-service teachers should be trained about the

importance of safety and the properties of the chemicals with using various learning strategies. In this

context, we aimed to determine the knowledge about lab safety among the pre-service teachers

through real-life laboratory accidents. This study, which focuses especially on the role of chemical

substances in laboratory safety, was discussed with its various dimensions. 21 pre-service teachers

taking the Laboratory Safety course and attending the Chemistry Teaching Program in a state

university's the Faculty of Education in Aegean region (Turkey), participated in this research, based

on the case study method. Worksheets containing cases related to laboratory accidents and semistructured

interview form were used as data collection tools. Considering the results of the research,

we found that the pre-service teachers generally had a lack of knowledge on the chemicals' hazard

classifications, physical, health and environmental hazards, pictograms, chemical properties, and

safety precautions of chemicals within the frame of laboratory safety.