I learnt about one sliders

This is another technique from J. D. Meier. He proposes that you should assemble a whole series of one slide presentations and then build presentations from this. I am not sure that this is suited to all situations however it is an interesting approach that encourages reuse of slides and also a lot more thought about the content of a slide. For the latter reason alone it is probably worth considering.

http://blogs.msdn.com/jmeier/archive/2007/08/02/one-sliders.aspx