Educational research

Hi,
this is the introduction part of an essay, the essay is about educational research and I was suppose to cover briefly these points in the introduction
1- educational research definitions
2-the nature of educational research
3-the purpose of educational research
4-importance of educational research
5- and the criticism and debate about educational research .
what I want you to do is to edit the introduction to make coherent and easily to be understood ( i.e. to make it make a sense ) you can add or change or amend any of my work to make it better.
Thank you and have a nice day