Answer the following questions on each with the 6 articles attached:
Who wrote the article?

What problem are they addressing?

What is the Research question?

What is the theory behind their solution?

What is their hypothesis?

What is their basic method?

How many people are in the study?

Is the sample a representative one?

What happened?

What did they find?

What inferences can be made from this (so what? Who cares?)?
How are they planning on fixing the problem?