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Students continue to explore the story of building a pyramid, learning about the simple machine called a pulley. They learn how a pulley can be used to change the direction of applied forces and move/lift extremely heavy objects, and the powerful mechanical advantages of using a multiple-pulley system. Students perform a simple demonstration to see the mechanical advantage of using a pulley, and they identify modern day engineering applications of pulleys. In a hands-on activity, they see how a
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References

Cremin, H., Thomas, G. and Vincett, K. (2003) ‘Learning zones: an evaluation of three models for improving learning through teacher/teaching assistant teamwork’, Support for Learning, vol.18, no.4, pp.154–61.
Department for Education and Employment (DfEE) (2000) The Teaching Assistant's File: Induction Training For Teaching Assistants, DfEE, London.

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Licensed under a Creative Commons Attribution - NonCommercial-ShareAlike 2.0 Licence - see http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ - Original copyright The Open University

3.1 What is the value of teaching assistants?

Hilary Cremin et al. (2003) in their evaluation of the ways in which teachers and teaching assistants can work together in teams, suggest that, while there is enthusiasm for additional support, little attention is given to how this actually works in classrooms. It is true that learning support staff have been introduced into classrooms without clear research evidence that they can make a difference to children's learning, but then life often moves faster than the supply of research evidence.<
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Licensed under a Creative Commons Attribution - NonCommercial-ShareAlike 2.0 Licence - see http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ - Original copyright The Open University

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