When I teach writing, one of the strategies I teach students is a procedure for identifying experts on a topic.
I call it ripple strategy. It is basically the process journalists use when they start to investigate a topic about which they have no real starting information.
I tell students to begin by seeing if they have personal expertise on the topic. They may not be an expert, but specifying what they know can help them in the search for expertise.
If they can’t think of anything they know from personal experience, they move a bit beyond themselves to people they know personally: family, friends, teachers, co-workers, the owner of the pizza place they patronize. Do any of those folks have expertise on the writing topic?
If no one comes to mind, they move to the next farthest ripple: People they don’t know personally but who are known by people they know personally. These are folks like Mom’s boss’s son or the mail carrier’s brother.
Finally, they come to the people they know about but to whom they don’t have any third party link.
Let’s say a student’s rippling has led him to think a good source on his topic would be someone who manages a nursing home.
The student can ask people in his closest “ripples” if they know someone who manages a nursing home.
If they don’t have any luck, they can use social media as a research tool.
Each of the major social media networks has its own search functionality.
Written for business people seeking customers, this article from the Business 2 Community website, gives a pretty good introduction to using Facebook, Twitter, Pinterest, Instagram, YouTube, and Google+ to find people with interest or expertise in a given topic. Although the list doesn’t include LinkedIn, the six options it does discuss are probably more familiar to students grades 7 to 14.
The article isn’t a perfect answer to students’ find-an-expert questions, but it’s a good start.