http://www.pearsonsuccessnet.com/snpapp/login/login.jsp
A couple of wonderful resources for all units are: http://classroom.jc-schools.net/waltkek/Second%20Grade%20Sites.html; http://www.scottsboro.org/~flewis/ .
Check out this PPT on Unit One stories: http://www.loudoncounty.org/ourpages/auto/2007/8/17/1187359280622/UNIT%201.ppt#256,1,UNIT 1
Additional Resources: http://www.scsk12.org/SCS/curriculum_guides/Reading_Street/Second/2nd-Unit-1.pdf