  In order to implement a STEAM approach including the use of technology,
namely the use of interactive mathematics software GeoGebra, in mathematics
classes, in the lusophone space, the materials presented here were conceived,
to be implemented in a first phase among teachers. Later, with the necessary
adaptations, these tasks will be applied to the students. The tasks deal with
modeling situations, in two- and three-dimensional geometric problems, in order
to apply GeoGebra software in its analysis to illustrate its capabilities. The
different windows of this software are used, namely the 2D and 3D windows, CAS
window, spreadsheet and extra two dimensional windows in order to study cutting
planes in solids and some surfaces. The tasks are presented so that any user,
regardless of the degree of knowledge they have of the software, can follow
them, being supported in scripts with some indications of the tools and
commands to use. Designed for the teaching and learning of Mathematics, from a
STEAM approach, these tasks allow connections with other Sciences and the Arts,
and allow the development of projects using and consolidating relevant
mathematical contents. These tasks are part of the proposals of activities of
the participants of the Training Courses for Trainers in GeoGebra for
Portuguese Speaking Countries, which from 2019 have an impact on the STEAM
approach. These courses are carried out with the high sponsorship of the
Organization of Ibero-American States for Education, Science and Culture (OEI).
Given the interest that the tasks have for the users of the Iberian space, as
well as their dissemination at a global level, the materials initially
developed in Portuguese language will be adapted for Spanish and English
speakers.
