You are expected to read all the linked papers for each lecture and submit a review for one of the papers.  

Each review should be around 1 page and include the following. 

Review format (a page):

Summary (one paragraph)

Strong points
S1. ...
S2. ...

Weak points
W1 ...
W2 ...

Please refer to How to read a paper for a good guideline on reading a paper and The task of a referee for tips on reviewing a paper (more critical than general reading but nonetheless helpful).