Uma abordagem sobre botânica para o ensino médio através da identificação de plantas utilizando uma chave dicotômica

Abstract

The teaching of Botany is currently seen as boring and out of context by students. Allied to this factor, there is a reduced workload available to teach the subject in high school, as well as precarious physical structures of schools. In this context, the present research addresses the development of a didactic sequence in Botany with the objective of providing students with the understanding of the vegetative and reproductive structures of angiosperms. Thus, it is proposed to carry out an investigative activity through the use of dichotomous keys, aiming at the identification of botanical families or species, through morphological characters of floral and vegetative organs, based on the following questions: Why is it important to identify a plant species? How can morphology be used in plant recognition? The final product will consist of the elaboration of a didactic sequence for educators and students containing the scripts, an illustrated glossary and a dichotomous key for nine families of angiosperms. Our perspective is that with the proposed activities, the investigative practical classes can be significant in the teaching-learning of Botany. This work also presents the process of construction of the didactic sequence, justifying the steps involved in its elaboration.