Encontrados 3 documentos, a visualizar página 1 de 1
Práticas de discussão matemática no ensino da Álgebra
Rodrigues, Cátia; Menezes, Luís; Ponte, J. P.Mathematical discussions contribute strongly to pupils’ learning, as they put into play a set of social interactions and processes of negotiation of mathematical meanings. This communication analyzes the discussion practices of a mathematics teacher of the 3rd cycle of basic education, in the context of collaborative work. The study is interpretive, qualitative and draws on interviews and participant observatio...
Atmospheric halogen and acid rains during the major Deccan episode: magnetic an...
Font, Eric; Fabre, Sébastien; Nédélec, Anna; Adatte, Thierry; Keller, Gerta; Veiga-Pires, C.; Ponte, J.; Mirão, José; Khozyem, HassanEnvironmental and climatic changes linked to Deccan volcanism are still poorly known. A major limitation resides in the paucity of direct Deccan volcanism markers and in the geologically short interval where both impact and volcanism occurred, making it hard to evaluate their contributions to the mass extinction. We investigated the low magnetic susceptibility interval just below the Iridium-rich layer of the B...
The pre-KPB interval: sedimentary record of a major Deccan Traps pulse ?
Font, Eric; Ponte, J.; Nédélec, Anna; Veiga-Pires, C.; Ellwood, B. B.; Camps, Pierre; Figueireido, M. O.; Silva, T. P. da; Nave, Silvia; Pozo, ManuelThe KPB crisis is one of the major biological crises that affected the Earth at Phanerozoic times. There is still an acrimonious debate on the nature and origin of this mass extinction: proponents of the idea that large bolide impacts caused most of the Phanerozoic mass extinctions are opposed to those who favoured a terrestrial origin linked to continental flood basalt eruptions of the Deccan Traps. The major ...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||