2 Boron (B) deficiency causes a wide array of symptoms, not only among species of palms, but also within a single species (i.e. Cocos nucifera). A better understanding of the effects of B deficiency in coconut will be important to try optimizing a rational fertilization management in coconut plants. Thus, modification of PSII photochemistry (using a group of fluorescence parameters, called the JIPtest, that quantify the stepwise flow of energy through Photosystem II) and gas-exchange in boron deficient green dwarf coconut plants were investigated. Our results suggest that a modification of PSII photochemistry (non-stomatic effects) and gas-exchange (stomatic effects) were induced by boron deficiency. Such modifications are manifested by (1) increase the ratio of total dissipation to the amount of active reaction centers (RCs) [dissipation (DI)/RC] and (2) leaf-to-air vapor pressure difference (VPD leaf-air ). These modifications (on PSII photochemistry and gas-exchange) were caused by a decrease in energy absorbed per excited cross-section [absorption flux (ABS)/cross section of the 439 Downloaded by [University of California Santa Cruz] at 07:46 05 April 2015 440 L. G. R. Pinho et al. (SPAD readings), growth parameters (root DW and height plant). Our results demonstrate that by analyzing fluorescence (JIP test parameters) derived from the polyphasic fluorescence transients measurements were able to estimate the functional changes of PSII in B deficient coconut plants. The results in this study suggest that fluorescence analysis (JIP test) and instantaneous measurements of gas-exchange can be useful tools in assessing the physiological effects of B deficiency in green dwarf coconut. sample (CS 0 )], density of active reaction centers (RC/CS), maximal trapping rate of an exciton that will lead to Q A reduction measured over a cross-section of active and inactive RCs [trapping flux (TR)/CS 0 ], electron transport per excited cross-section [electron transport flux (ET 0 )/CS)], area above curve (proportional to the pool size of the electron acceptors QA on the reducing side of PSII), photosynthesis (A), stomatal conductance (g s ), transpiration (E), chlorophyll concentration

In this article we describe and discuss the path tracked by the Research and Extension

ResumoEste texto tem por objetivo apresentar reflexões a respeito da trajetória das políticas educacionais para jovens e adultos ao longo da história da educação no Brasil até o seu encontro com a educação profissional, através do Programa Nacional

RESUMO: O presente trabalho objetiva abordar, analisar e discutir uma significativa experiência de ensino e aprendizagem adquirida em uma oficina pedagógica, no âmbito do Curso de Pedagogia da Universidade Estadual do Norte Fluminense (UENF), no bojo do Centro de Educação a Distância do Estado do Rio de Janeiro (CEDERJ). Tal atividade foi concretizada por professores, tutores e alunos das disciplinas História na Educação 1 e História na Educação 2 do curso supracitado. A partir das referências de diferentes pesquisadores do campo do Ensino de História e da Educação, discorremos em um momento inicial acerca da organização e estruturação da Oficina, para posteriormente tratarmos da concretização da atividade em si pelos estudantes. A Oficina muito contribuiu para a reflexão acerca das práticas pedagógicas e para uma maior aproximação entre docentes, tutores e estudantes, bem como oportunizou pensamentos acerca das diferentes tecnologias e outros materiais que podem ser empregadas no ensino de História. PALAVRAS-CHAVE: oficina pedagógica; ensino de História; educação a distância; curso de Pedagogia. ABSTRACT: The present work aims at addressing, analyzing and discussing a significant experience of teaching and learning acquired in a pedagogical workshop, within the course of pedagogy of the State University of the North Fluminense (UENF), in the Centre of Distance Education of the State of Rio de Janeiro (CEDERJ). Such activity was accomplished by teachers, tutors and students of the disciplines History in Education 1 and History in Education 2 of the aforementioned course. From the references of different researchers of the field of History Teaching and Education, we have come at an initial moment about the organization and structuring of the workshop, to subsequently embrace the realization of the activity itself by the students. The workshop contributed greatly to reflect on pedagogical practices and for a closer approximation among teachers, tutors and students, as well as it allowed to think the different technologies and other materials that can be employed in the History teaching. KEYWORDS: Pedagogical workshop; History teaching; distance education; Pedagogy course.

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