Conditional probability applied to the definition of limestone geochemical facies: A new Methodological Approach

A new method, based on linear correlation and phase diagrams was successfully developed for processes like the sedimentary process, where the deposition phase can have different time duration - represented by repeated values in a series - and where the erosion can play an important rule deleting values of a series. The sampling process itself can be the cause of repeated values - large strata twice sampled - or deleted values: tiny strata fitted between two consecutive samples. What we developed was a mathematical procedure which, based upon the depth chemical composition evolution, allows the establishment of frontiers as well as the periodicity of different sedimentary environments. The basic tool isn't more than a linear correlation analysis which allow us to detect the existence of eventual evolution rules, connected with cyclical phenomena within time series (considering the space assimilated to time), with the final objective of prevision. A very interesting discovery was the phenomenon of repeated sliding windows that represent quasi-cycles of a series of quasi-periods. An accurate forecast can be obtained if we are inside a quasi-cycle (it is possible to predict the other elements of the cycle with the probability related with the number of repeated and deleted points). We deal with an innovator methodology, reason why it's efficiency is being tested in some case studies, with remarkable results that shows it's efficacy. Keywords: sedimentary environments, sequence stratigraphy, data analysis, time-series, conditional probability.

The Digital Textbook: Methodological and Didactic Challenges for Primary School

The potentialities of ICT in education bring about changes in the teaching and learning methodologies, in the places where you learn and in the way you learn. This demands a reflection not only on the ways of learning, but also on the support resources, so that learning can take place and, of course, it is indispensable to understand the teachers’ answer to the digital challenges. Thus, the purpose of this analysis is to reflect about technological trends in an educational context and their underlying models by analyzing the role played by digital textbooks in Portugal in an innovating context. This way, we intend to contribute to an educational policy as we plan to relate the teachers’ training to the increasing development of the digital textbooks and we also intend to contribute to the understanding of a didactic resource which is closely related to the learning processes which resort to advanced technology.

A sonata de um professor em formação: aprender, refletir e agir

Passo a passo, foi trilhado um caminho que proporcionou um crescimento e um maior conhecimento acerca da profissão docente. De facto, o desafio de se ser professor está profundamente relacionado com o gosto de se querer ensinar, bem como com a vontade de se querer colocar ao serviço do outro. Deste modo, o presente relatório de estágio, integrado na unidade curricular de Integração Curricular: Prática Educativa e Relatório de Estágio, do 2.º ano de Mestrado em Ensino do 1.º e 2.º Ciclos do Ensino Básico, assume-se como um documento que tem como objetivo espelhar o percurso desenvolvido ao longo da Prática Educativa Supervisionada. Nesta caminhada, que se valoriza pelo seu percurso, destacam-se as aprendizagens realizadas, que foram favorecidas pela colaboração com o par pedagógico, orientadores cooperantes e supervisores institucionais a partir de um ciclo de supervisão pautado pela exigência. Assim, este relatório de estágio configura-se como um documento pessoal que representa a construção da profissionalidade docente, sendo o retrato de um percurso de crescimento profissional.