Toegevoegd door Rui Silva op 13.05.2010
This is a good resource to understand the seasons. It alows to demonstrate how can the trajectory of the earth around the sun, influences the temperature of our planet. It�s a resource which can be used by the teacher to show to the students the movements of some celestial bodies like the Earth and Moon. It can be used also to show how the trajectory of the sun in the sky influences the daylight.
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