on. The following geometric elements are approached: squarecube, rectangle-parallelepiped; triangle-prism, trianglepyramid, triangle-cone, circle-sphere, cylinder-circle. Besides
3D models, animation and sound scripts were included to
enhance interactivity. For example, when a 3D object appears
on screen, a sound effect is executed and, if the user "touches"
a 3D object, then it starts spinning on the screen. Each page has
an activity for the user to choose a correct answer. Extra
exercises were also created, where users can compare pairs of
geometric figures and reflect on the similarities and differences
between them. Moreover, there are also fields with open spaces
so users can type answers to open questions.