As for example, it has a time to construct a graphical one it was necessary ruler, pencil and rubber, and could not be perfect, but with the technology it is possible to construct a perfect graph through the simulator, is I practise, fast and seve for any type of possible equation. An equation of 2 degree with socket for low when the coefficient is negative or with socket for top when the coefficient is positive, and to perceive of efficient visible form the graph of the equation. But still many professors exist who fear the computer and do not know to work with it are for having come of another generation. many do not work on account with the computer of the conditions of the school. The calculator is a tool that assists in those problems whose the account is more complex, as for example if I to ask: ' ' how many hours have one day? ' ' it is easy to answer all know, but and if I to ask: ' ' How many seconds have four years? ' ' she is more complex to answer itself and the calculator assists in this account therefore is very flat to make this type of operation in the hand. But the pupil can make comfortable itself in only making the calculations of the problems in the calculator and relaxing and to spend intelligence and the mathematical knowledge deciding the problem in itself. To learn the arithmethic table still is very preoccupying for if treating to memorize it, but to say that if not to know the arithmethic table it does not know mathematics are very deceived, therefore the mathematics goes very beyond what only the arithmethic table. The arithmethic table is only one tool or a form to make the pupil to decide one definitive necessary problem without making accounts in the hand and nor in the calculator, to make mental.