Hi,
I'm quite suprised at the change in topic and was rather hoping that you would stick to the theme of tourture as I though it was a really interesting issue with respect to the ways of knowing. It's a shame but as you've made up your mind let's deal with the current question.
The first thing you must clarify is 'what is intuition?' Secondly, what are you trying to show or deal with in this presentation i.e. why 'intuition' and why the 'natural sciences'? In other words, is there a particular idea that you wish to convey? The reason why I'm asking these questions is because if you are able to answer the first question, in my opinion, the question becomes redundant. I view intuition as an advanced form of inductive reasoning, but nevermind that; the point of the matter is that intuition is not measurable, so its almost impossible to state what kind of 'role' it should play.
Did you think of this question by yourself? Because if you did then try to answer question 2 and rephrase the question to really convey what you are trying to explore. If you were 'guided' to this question then I suggest you start from scratch because doing a presentation on something not intuative to you is a very difficult job indeed.