Abstract
The present study aimed to identify the main difficulties of the teachers of the Chemistry discipline of Metropolitan Region of Vitória and Mountain Region of the State of Espírito Santo, when teaching the content of Chemical Bonds for the first grade of the New High School. A questionnaire was produced with the main difficulties of didactic transposition and sent to 30 professors from the mentioned regions. With the data obtained, a didactic sequence was proposed, using the Investigative Teaching Sequence methodology.
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