For everything an explanation is had! He will be same? Questions of the type above would have to be frequent in the pertaining to school scope not only of level average education, but in a general way! The more instigantes will be the pupils, greater will be the fluidity of the professor stop with this content, this test that to teach physics is really a way of double hand, are of extreme importance that has an interaction between the two parts pupil-professor. To take for the classroom experiments generates these questionings, the more controversial will be a lesson of more interesting physics it will be. Some professors due to security stop these types of questionings so that it not erre before its pupils! Is a nonsense this? Not! It is a reality that has happened in some schools spread for the world Soon it is concluded that to study physics motivation must be had but, greater must be the motivation of the professor stops with disciplines, therefore we can firmly admit here that to teach physics it is not an easy task, quite to the contrary. However, waist game must be had to face the routine of a classroom, as much in expositivas lessons how much in experimental lessons. often quoted as being for or against this. that comes the questionings! They will be as rocks that when together they tread a way! As already Henry Peter said: ' ' The education makes with that the people are easy to guide, but difficult to drag; easy to govern, but impossible of escravizar' '. Before imposing to the pupils as many concepts, definitions and forms, support must be given so that they can construct these alone ideas.. .