The Computer in the Teaching of Mathematics

The difficulty in learning mathematics is often caused by the prior fear of mathematics. Besides the necessity of changing the methods of teaching and teachers training, computer may be a tool that can be used to avoid this fact and to make learning funnier. The use of Information and Communication Technologies (ICT) in schools is still unusual. Several factors contribute to that: the lack of training of teachers, the lack of material resources and the excessive number of students per class. Computers should be used as tools to assist students in the exploration and discovery of concepts, to make the transition from concrete experiences to abstract mathematical ideas, in practice routines, and in the process of troubleshooting, but only as auxiliary and not as the goal of education itself. The use of computer in solving a problem requires that users of these tools have knowledge of errors theory; otherwise they can get wrong values that they do not know how to explain. This work aims to reflect on the occurrence of some of the most common mistakes when using these tools.