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This study was aimed at estimating the frequency of unbalanced structural chromosomal anomalies identified in the consecutive series of newborn infants with congenital defects, registered in the Spanish Collaborative Study of Congenital Malformations (ECEMC). These cases were cytogenetically studied at…

Between February 4 and 15, 1981, a particularly well recorded earthquake widely felt in Mexico City. These events were rather large by local standard; magnitude estimates for the initial and a couple of later shocks are in the range of…

In a pervasive media and technology landscape that is increasingly global, participatory and connected, one in which learners and teachers can increasingly become creators of knowledge rather than mere consumers of prepared messages and ideas, it is vital for the…

O pragmatismo é apresentado como uma atitude anti-representacionista, isto é, como uma crítica à idéia de fundamentação do conhecimento ou da verdade. Esta crítica torna-se possível a partir de uma interpretação funcional para o problema do conhecimento, segundo a qual…

O pragmatismo é apresentado como uma atitude anti-representacionista, isto é, como uma crítica à idéia de fundamentação do conhecimento ou da verdade. Esta crítica torna-se possível a partir de uma interpretação funcional para o problema do conhecimento, segundo a qual…

This study examined growth in graphical literacy for students contributing to an online, multimedia, communal environment as they advanced their understanding of biology, history and optics. Their science and history studies started early in Grade 3 and continued to the…

Based on the notion of language-game, as formulated by Ludwig Wittgenstein, the relation ship between language, individual practice, belief and knowledge is examined. Knowing is identified as context-adjusted behavior, under learning or extended exercise, while beliefs are considered as dispositional…

In 1993 Carey and Smith conjectured that the most promising way to boost students’ understanding of the nature of science is a “theory-building approach to teaching about inquiry.” The research reported here tested this conjecture by comparing results from two…

Based on the notion of language-game, as formulated by Ludwig Wittgenstein, the relation ship between language, individual practice, belief and knowledge is examined. Knowing is identified as context-adjusted behavior, under learning or extended exercise, while beliefs are considered as dispositional…