The Sprint Activity window is available in the TEAM ROOM for the Sprint List and Sprint Cards views. It provides activity that occurs on all Tasks, Stories, and Discussions for all users. You can filter Tasks by Date (From, To), Type, User and many more (see below). You can use this information to:
From the top-right of the 
                  		  TEAM ROOM, click the 
                  		  Sprint Activity button: 
                  		   .
.