Great Interaction activities for Language Arts.  Numerous sites.
http://www.netrover.com/~kingskid/hanglist.html

PBS Kids
http://pbskids.org/

Click on the link below to practice your syllable skills !
http://www.bbc.co.uk/skillswise/words/spelling/soundandspell/syllables/game.shtml

Click on the link below to practice making compound words!
http://www.quia.com/mc/260183.html

Click on the link below to practice making singular words plural!
http://www.funbrain.com/plurals/index.html

Click on the link below to practice contractions !
http://www.sadlier-oxford.com/phonics/flyby/flyby1.htm

Click on the link below to practice synonyms !
http://www.quia.com/mc/67661.html
http://arcademic.altec.org/

Click on the link below to practice antonyms!
http://www.quia.com/mc/3974.html

Click on the link below to practice punctuation skills.
http://www.iknowthat.com/com/L3?Area=Paintball

Below you will find links to help reinforce 2nd grade grammar skills.
http://www.funbrain.com/grammar/index.html