Ecuaciones y sistemas de ecuaciones de primer grado.

Este vídeo forma parte de un curso completo de matemáticas para EGB

Ecuaciones de segundo grado.

Este vídeo forma parte de un curso completo de matemáticas para EGB

Ejes de coordenadas.

Este vídeo forma parte de un curso completo de matemáticas para EGB

Funciones de primer grado.

Este vídeo forma parte de un curso completo de matemáticas para EGB

Funciones de segundo grado.

Este vídeo forma parte de un curso completo de matemáticas para EGB

Estadística I.

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Estadística II.

Este vídeo forma parte de un curso completo de matemáticas para EGB

Estadística III.

Este vídeo forma parte de un curso completo de matemáticas para EGB

Emociones y educación : qué son y cómo intervenir desde la escuela.

A raíz de las conclusiones del informe de la Comisión para la Educación del s.XXI (Informe Delors, 1996), se ha puesto de relieve la importancia de aprender a ser en relación con los demás. Este libro ofrece un mosaico de reflexiones y experiencias sobre la esfera de lo emocional realizadas en las aulas de infantil, primaria y secundaria. Dado que las emociones son básicas en la vida y en las relaciones, también deberían serlo en la educación..

Corporalidades e identidades urbanas. Estudio comparativo de caEso: rockers y emos de Quito

El propósito del presente trabajo es realizar una lectura y análisis de tipo descriptivo y vivencial sobre las prácticas y procesos que contribuyen a la configuración de las “nuevas” corporalidades estéticas e identidades al interior de las culturas urbanas Rocker y Emo de Quito. Para ello hay que tomar en cuenta las construcciones sociales como imaginarios y estereotipos que se han construido alrededor de estos sujetos socialmente estigmatizados por la irrupción que proponen al canon estético y corporal hegemónico. Así mismo, estos procesos socioculturales permiten develar, en primer lugar, prácticas en torno al cuerpo y a las corporalidades contemporáneas que configuran estéticas “abyectas” y, en segundo, maneras de consumir el cuerpo que conllevan a erigir nuevas eróticas y relaciones entre los sujetos que integran estas culturas urbanas. No obstante, la cuestión corporal al interior de estas culturas urbanas se va ubicando en medio de prácticas conflictivas que ven en el cuerpo y las corporalidades objetos que históricamente han sido fuente de disputas y control social. Un aspecto angular de este trabajo será develar esos procesos y prácticas socioculturales que se disputan el control y autoridad sobre un cuerpo y unas corporalidades que buscan irrumpir en el canon estético hegemónico. Claro, sin olvidar mirar de manera directa, a través de la convivencia, a los integrantes de estas culturas urbanas y comprender así sus dinámicas internas e interculturales. Es de esta manera se podrá identificar las prácticas, rituales y actividades que atraviesan a estas comunidades alternativas teniendo como línea conductora siempre al cuerpo, las corporalidades, y las estéticas y las identidades producto de estas relaciones sociales de tipo alternativo.

Prevalence of Vitamin D Insufficiency in Brazilian Adolescents

Background/Aims: Cutaneous sun exposure and dietary vitamin D intake are important determinants of vitamin D status. The objective of the present study was to evaluate the vitamin D status of a group of healthy adolescent students living in Brazil. Methods: One hundred and thirty-six adolescents, 64 boys and 72 girls, aged 16-20 years old, living in a rural town in the state of Sao Paulo, Brazil, participated in this study. Results: The mean dietary vitamin D intake was 140 (120-156) IU/day [3.5 (3.0-3.9) mu g/day]. Only 14.9% of the students met the daily adequate intake recommendation of vitamin D. Only 27.9% practice physical activity outdoors and 17.6% of the adolescents apply sunscreen daily. The mean 25(OH)D concentration was 73.0 (22.0) nmol/l [29.2 (8.8) ng/ml]. Vitamin D insufficiency was observed in 60% of adolescents. Conclusions: The present study suggests that even in a sunny climate like Brazil the prevalence of vitamin D insufficiency in adolescents is high. Most likely this is due to low intakes of vitamin D in this group. Due to the limited extent of natural dietary sources of vitamin D, a policy of vitamin D food fortification should be considered in the future, and in the meantime greater use of vitamin D supplements in this population group should be encouraged to provide the increased amounts of this essential nutrient for optimal health. Copyright (C) 2009 S. Karger AG, Basel

Um estudo sobre a apreciação do raciocínio matemático na formação inicial de professores

The present work focused on developing teaching activities that would provide to the student in initial teacher training, improving the ability of mathematical reasoning and hence a greater appreciation of the concepts related to the golden section, the irrational numbers, and the incommensurability the demonstration from the reduction to the nonsensical. This survey is classified itself as a field one which data collection were inserted within a quantitative and qualitative approach. Acted in this research, two classes in initial teacher training. These were teachers and employees of public schools and local governments, living in the capital, in Natal Metropolitan Region - and within the country. The empirical part of the research took place in Pedagogy and Mathematics courses, IFESP in Natal - RN. The theoretical and methodological way construction aimed to present a teaching situation, based on history, involving mathematics and architecture, derived from a concrete context - Andrea Palladio s Villa Emo. Focused discussions on current studies of Rachel Fletcher stating that the architect used the golden section in this village construction. As a result, it was observed that the proposal to conduct a study on the mathematical reasoning assessment provided, in teaching and activity sequences, several theoretical and practical reflections. These applications, together with four sessions of study in the classroom, turned on to a mathematical thinking organization capable to develop in academic students, the investigative and logical reasoning and mathematical proof. By bringing ancient Greece and Andrea Palladio s aspects of the mathematics, in teaching activities for teachers and future teachers of basic education, it was promoted on them, an improvement in mathematical reasoning ability. Therefore, this work came from concerns as opportunity to the surveyed students, thinking mathematically. In fact, one of the most famous irrational, the golden section, was defined by a certain geometric construction, which is reflected by the Greek phrase (the name "golden section" becomes quite later) used to describe the same: division of a segment - on average and extreme right. Later, the golden section was once considered a standard of beauty in the arts. This is reflected in how to treat the statement questioning by current Palladio s scholars, regarding the use of the golden section in their architectural designs, in our case, in Villa Emo

Atenção à saúde mental na Estratégia Saúde da Família no Município de Parnamirim/RN: opinião dos profissionais, dos portadores de transtornos mentais e seus acompanhantes

This study aims to analyze and compare the opinion of professionals, managers and users about the mental health care in the Family Health Strategy (FHS). It is characterized as an Operations Research or Health System Research with a cross-sectional design and a descriptive quantitative nature. The study was developed from the application of the Opinion Measurement Scale allied to techniques of observation and structured interview in the city of Parnamirim / RN. The sample consists of 409 subjects, 209 professionals of the Family Health Strategy, 30 of the Oral Health Strategy, 19 of the Family Health Support Center, 24 directors of Basic Health Units, plus 68 users with mental disorders and 59 caregivers, respecting the ethical parameters of Resolution 196/96 of the National Health Council, trial registration number: CAAE 0003.0.051.000-11. Quantitative data were submitted to the Epi-info 3.5.2 for analysis. The network of mental health in Parnamirim involves the flow between the FHS, Psychosocial Care Centers, clinics and hospitals, having as main barriers the fragility of the referral and counter-referral system, of the municipal health conferences, of the FHS teams by the limitations in material and human resources as well as the population´s lack of acknowledge about the organization of the mental health network, issues that affect the integral attention. Even though the FHS professionals recognize the importance of their actions, they question their role in mental health care, experiencing difficulties in accessing psychiatric services (76.5%). Although most agree that the mentally ill is best treated in the family than in hospital (65.2%), the community health workers were the predominant category in the partial or total disagreement of this statement (40.8%), who is the professional in greater contact with the family. Nevertheless the caregivers miss the support of the FHS as the main focus of attention is on revenue control. The views of professionals, mental patients and caregivers converged in several statements, showing the main weaknesses to be focused by the mental health network of the city, as the perceptions that: (a) physical strength is needed to take care of mental patients for its tendency to aggression, requiring it to stay in the sanatorium for representing danger to society, (b) only a psychiatrist can help the person with emotional problems, (c) the user of alcohol and drugs does not necessarily develop mental illness, (d) the access barriers and doubts about the quality of psychiatric services, (e) caring of a mental health patient does not bring suffering to professionals. Therefore, the commitment to consensus building, monitoring and evaluation of the network are important mechanisms for an effective management system, reflecting in the importance of strengthening the health conferences and approximating different institutions. The results reinforce the importance of strengthening primary care through programs of continuing education focusing on the actions and functions of professionals in accordance with its competences and duties what contribute to the organization and response of mental health care, favoring user´s care and the promotion of family health