This article presents a didactic situation focused on geometric reasoning using 3D GeoGebra, using the concepts Theory of Didactical Situations (TDS). The objective of this work is to bring a didactic proposal for the teaching of Spatial Geometry, working with the students' geometric perception, oriented and elaborated based on the dialectic of…

In schools today, tests and curricula are primarily suited to the types of students who excel in mathematics and verbal reasoning. The missing factor in testing and education policy is the measurement, selection, and talent development of students with strengths in spatial reasoning. Spatial reasoning is defined as "the ability to generate,…

With ongoing concerns about environments that push teachers toward increasingly structured assessments, thus reducing opportunities to observe young learners' mathematical capabilities, the publication of this special issue on formative assessment is especially significant and timely. The articles illustrate how we cannot rely solely on…

This study examined eighth graders' approach to three tasks implemented to assist students with learning to interpret contour maps. Students' approach to and interpretation of these three tasks were analyzed qualitatively. When students were rank ordered according to their scores on a standardized test of spatial ability, the Minnesota Paper Form…