This author enters the main functions of the practical lessons cites: to awake to keep the interest of the pupils; to involve the students in scientific inquiries; to develop the capacity to decide problems; to understand basic concepts; to develop abilities (PRIGOL: GIANNOTTI apud KRASILCHILK, 2008, P. Fitness brings even more insight to the discussion. 3). The development of new abilities, the capacity to decide problems, to search for scientific initiation is abilities that we educators desire for our pupils, but agrees that it is not so easy how much we imagine, must have love, devotion optimism to show to the professional futures the way to be covered. Intellectual development of the pupils the search of bigger acquisition of knowledge in the lessons of Sciences and Biology has been one of the biggest challenges for the educators, therefore if it knows that for this, the analysis of diverse factors is necessary that has been argued since the beginning of this article, mainly also depends on the availability, will, interest and disposal of educating. In this context, one searched to characterize a style of work through which the pupils of sciences can be assumen of contents, procedures and scientific attitudes. This process is the scientific action in itself, as possibility of learning and estimuladora of individual search when scientific and technological knowing (VASCONCELOS et al., 2002, p.1). The use of practical lessons is basic, therefore the same ones have contributed sufficiently with the intellectual development of the pupils who through the method of the visualization and the concretion of the content, assimilate the substance successfully. The professor when preparing practical lessons will be perfecting new forms of education, looking for to insert educating in the learning, becoming the content accessible, understandable and interesting. To search new methods means to have education techniques, and from the moment where the professor constructs innumerable forms to transmit and to interact with the pupil, this will get better performances.

If it will be consumed with moderation makes well but in excess as any another food makes badly, because of the caffeine. Objective: To analyze if the present caffeine in the coffee makes well or badly for the professional of the education. Justification: Therefore the coffee sufficiently is consumed enters the professors in the schools, remembering that it is a stimulant that leaves the person most irritated, felt it necessity to make a survey of the risks and benefits seno would be the case to change these habits for calmantes teas as camomila and grass-candy. caffeine a chemical composition, classified as alkali, belongs to the group of xanthins, chemically assigned as 1,3,7-trimetilxantina (C8H10N4O2) medicinal Properties? He is analgesic? Cardiotnico? Digestive? Diurtico? Stimulant? Exciting substance? Intellectual Revigorante? Sudorfero? Tonic? It increases the metabolism? Stimulant of the nervous system? It diminishes the mental fatigue? Dilatar the bronchis? &#039 assists in the treatment of Diabetes Mellitus when lowering the glucose; ' Adverse effect the caffeine is associated with ssea desmineralizao, being able to contribute for osteoporose. 2. Some recent studies show to a possible relation between the consumption of caffeine and the cancer of bladder. Other studies show that the consumption of 1 xcara of coffee to the day is enough to increase the risk of stomach cancer, kidneys, pulmoes, colon and esophagus. 3.

Worsening of pictures of anxiety, sleeplessness and depression. 4. Problems in the stomach (gastrites and ulcers) and refluxo (azia). 5. Rise of the pressure arterial, of the glicemia and the cholesterol, exactly how much taken without sugar. 6. The consumption of 5 xcaras of coffee per day is associated with an increase of 300% in the risk of cardiovascular illnesses.

7. Increase of the risk of abortions and you drink been born with low weight, when consumed for gestantes. 8. Certainly it is the consumed drug more in the world, for allowed and being considered harmless by the population.