The new instrument to find the altitude of sun in a practice in the geometry teaching laboratory ; El instrumento jacente no plano en una práctica en el laboratorio de enseñanza de geometría ; O instrumento jacente no plano em uma prática no laboratório de ensino de geometria

Research in Mathematics Education has increasingly pointed to the need for a Mathematics Teaching Laboratory to be made available in Basic Education schools and universities. One of the reasons is that this environment favors the education of students, as it is possible to learn in it, as well as learn to learn. In this article, the aim is to present a laboratory practice with students of the Licentiate Degree in Mathematics on the mobilization of the concepts of isosceles rectangle triangle and perpendicularity in space from the construction of the new instrument to find the altitude of sun highlighting its didactic potential. This action has a qualitative nature and was supported by the contribution of a Basic Problematization Unit. The study reveals, for example, based on the need to position the triangle perpendicular to the board, that the action prompted students to think of a strategy taking into consideration material and mathematical aspects. They were also able to visualize and apply abstract concepts in practical terms, a fact that possibly favored the attribution of even more meanings to the mobilized concepts. Therefore, it is concluded that exploring the instrument in practice with undergraduate students can contribute to professional development. ; La investigación en Educación Matemática ha señalado cada vez más la necesidad de disponer de un Laboratorio de Enseñanza de las Matemáticas en las escuelas y universidades de Educación Básica. Una de las razones es que este entorno favorece la educación de los estudiantes, ya que es posible aprender y aprender a aprender. En este artículo, el objetivo es presentar una práctica de laboratorio con estudiantes de la Licenciatura en Matemáticas sobre la movilización de los conceptos de triángulo rectángulo isósceles y perpendicularidad en el espacio a partir de la construcción del instrumento jacente no plano destacando su potencial didáctico. Esta acción tiene carácter cualitativo y fue apoyada con el aporte de una Unidad Básica de Problematización. El ...