This material shares a set of seesaws developed by prospective teachers from Brazil, as part of a practice with geometric modeling. The combined use of physical and digital resources to represent joints is brought to evaluate perspectives of this approach for teaching and learning related especially to Science, Technology, Engineering and Mathematics (STEM). Even the core is in the fourth session, the second and third topics are connected with that. The second one is a previous experience with high school students that was used like motivation and the third one is the final construction developed recently at VIII CIBEM conference where participants did collaboratively this model in a workshop.
(presented on GeoGebra Global Gathering in July 2017)
