Q8. Falling Down A Hole Through The Earth:
The Earth: The purpose of this task is to consider the shape of the Earth, where we live on it and of objects falling down towards the Earth.
CORE CONCEPTS:
On Earth, objects do not just fall 'down', they fall towards the centre of the Earth. Gravity is a property shared by all objects - including a beam of light.
Everyone knows the phrase 'What goes up must come down', but the goal of a good educator is to explain phenomenon in terms of principles that go beyond a single phenomenon - instead, to provide an understanding that is capable of generalisation in a deep and consistent manner.
A student's conception of gravity must grow in sophistication to the point that it becomes more than a mere name associated with 'falling'. Gravity must be understood in terms of its cause, its source, and its far-reaching implications on the structure and the motion of the objects in the universe.
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- Work in progress - June 2015
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