The use of mathematical software such as GeoGebra has benefited the teaching of
geometry and also provided new experiences to students, with opportunities for
experimentation, simulation and observation. From the above, this work aims to
introduce three proposed activities, involving the use of the GeoGebra simulation
software, for the teaching of Geometry in the 9th year of elementary school. This work
is a purposeful research and the construction of the activities was based on the objects
of knowledge of the National Common Curricular Base, available for the teaching of
geometry in the 9th grade and in previous years of elementary school. Each activity
presented was defined taking into account: the geometry knowledge objects to be
worked on; the essential conditions for their application and guidance for carrying them
out. With this, it is expected that the interaction of the objects of knowledge treated in
the activities using the GeoGebra software will be able to involve, stimulate and arouse
the interest of 9th grade students in learning Geometry.
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