The mathematical games are not the only playful forms to work a content, but she is one of most accepted for the pupils. Therefore the professor is very important in this hour to know to adapt the certain game for each content, to relate concepts, to think about substances, to study contexts, to observe the pupils and to reflect on the effectiveness of what he is considered, being plus a game not simply any. The use of games and curiosidades in the education of the Mathematics has the objective to make with that the adolescents like to learn this discipline, changing the routine of the classroom and despertando the interest of the involved pupil. Another reason for the introduction of games in the mathematics lessons is the possibility to diminish blockades presented for many of our pupils who fear the Mathematics and feel themselves incapacitated to learn it. Inside of the game situation, where a passive attitude is impossible and the motivation is great, we notice that, at the same time where these pupils say Mathematics, they also present one better performance and attitudes more positive front its processes of learning.