Here is a list of links to helpful websites for second graders and parents.
Math
http://mathplayground.com/index.html
http://www.internet4classrooms.com/skills-2nd-mathbuilders.htm
http://www.abcya.com/second_grade_computers.htm
ELA
http://www.readwritethink.org/parent-afterschool-resources/grade/1-2/
http://www.internet4classrooms.com/skills-2nd-langbuilders.htm