Discussing the Greenhouse Effect: children's collaborative discourse reasoning and conceptual change

1998 ◽  
Vol 4 (1) ◽  
pp. 67-85 ◽  
Author(s):  
Lucia Mason ◽  
Marina Santi
Author(s):  
Lei Liu ◽  
Cindy E. Hmelo-Silver

One problem in science education is that students neither construct in-depth conceptual understanding nor are they able to apply scientific thinking processes. A myriad of studies on conceptual change have investigated the nature and process of conceptual change, and pedagogical strategies to foster conceptual change and improve higher-level thinking. We propose a new framework - the collaborative scientific conceptual change model – to stresses the importance of high quality collaborative discourse and scientific epistemic practices in the process of conceptual change. To investigate how group interactions influence individual students’ learning gains, multilevel analysis was used to analyze the hierarchically nested data and qualitative analyses were presented to compare high and low-achievement groups’ discourse and their application of epistemic practices. The results found that predicting and coordinating theory and evidence were key practices that predicted students’ individual posttest performance and the group interactions were related to the group understanding.


2013 ◽  
Author(s):  
Benjamin C. Heddy ◽  
Gale M. Sinatra ◽  
Robert Danielson ◽  
Jesse Graham

2001 ◽  
Vol 7 (2s) ◽  
pp. 26-33 ◽  
Author(s):  
O.E. Gotynyan ◽  
◽  
V.N. Ivchenko ◽  
Yu.G. Rapoport ◽  
◽  
...  

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Romdhane Ben Slama

The global warming which preoccupies humanity, is still considered to be linked to a single cause which is the emission of greenhouse gases, CO2 in particular. In this article, we try to show that, on the one hand, the greenhouse effect (the radiative imprisonment to use the scientific term) took place in conjunction with the infrared radiation emitted by the earth. The surplus of CO2 due to the combustion of fossil fuels, but also the surplus of infrared emissions from artificialized soils contribute together or each separately,  to the imbalance of the natural greenhouse effect and the trend of global warming. In addition, another actor acting directly and instantaneously on the warming of the ambient air is the heat released by fossil fuels estimated at 17415.1010 kWh / year inducing a rise in temperature of 0.122 ° C, or 12.2 ° C / century.


1995 ◽  
Vol 62 (3) ◽  
pp. 357-369 ◽  
Author(s):  
Frank Arntzenius
Keyword(s):  

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