Da harmonia do sorriso ao equilíbrio químico: proposta de situação de ensino e aprendizagem em química.

The aim of this work was to develop and evaluate a pedagogic moment based on teaching and learning situation (TLS) that could allow the interplay of concepts of chemical equilibrium and dental caries, as well as oral health education based on oral hygiene and the rationale use of fluoride. As secondary aims, it was surveyed the level of interest of high school students in Chemistry and also which topics were the most difficult for them to learn. Three TLS were planned just after it has been established the students´ profile: TLS-1 - sensitization carried out with pictures of famous people before fame (with dental problems) and after fame; TLS-2 – Experimentation and problematizing that was performed putting egg shell into vinegar to produce carbonic gas and allow discussion on chemical reactions. Part of the egg shell was exposed to fluoride to show its remineralizing effect in controlling dental caries; TLS-3 – Evaluation was carried out using a questionnaire. Ninety students from a high school of João Pessoa were enrolled. Most students showed low level of interest in studying Chemisty. They identified that Chemistry is more related to Biology and Physics than to Mathematics. Chemical equilibrium was regarded as a difficult topic to learn. After performing the TLS the students recognized that Chemistry can be important for their personal life. Finally, the TLS that were performed could present chemical concepts on chemical equilibrium linked to oral hygiene recommendations. The message of maintenance of oral health allowed the student to think and interpret chemical equilibrium and they could recognize that chemistry is present in their daily life.

Grantor

Química

Year dc:date.issued

2014

Author dc:creator

• Sampaio, Fábio Correia.

• Ensino de química
• Equilíbrio químico
• Cárie dentária
• Saúde bucal
• Chemistry teaching
• Chemical balance
• Dental cavity
• Oral health

Language dc:language.iso

pt

Repository record dc:identifier.uri

https://repositorio.ufpb.br/jspui/handle/123456789/722

OAI identifier oai:identifier

oai:repositorio.ufpb.br:123456789/722