Friendly letter generator:

http://www.readwritethink.org/files/resources/interactives/letter_generator/

Mistake quiz:

http://www.quia.com/pop/7318.html

Main Idea

Get the Idea, a Main Idea Activity:
http://www.beaconlearningcenter.com/WebLessons/GetTheIdea/default.htm

Main Idea online activities:
http://www.manatee.k12.fl.us/sites/elementary/samoset/mainideaprac.htm

Contractions

This is a link to several contraction games:

http://www.vocabulary.co.il/contractions/

Treasure trove:

http://www.primarygames.com/contractions/start.htm

More Links

Parts of speech space invader game:

http://www.arcademicskillbuilders.com/games/invasion/invasion.html

Verb Viper:

http://www.arcademicskillbuilders.com/games/viper/viper.html

Fact or opinion games

http://languageartsgames.4you4free.com/fact_or_opinion.html http://www.harcourtschool.com/activity/trophies/test_tutor/grade4/skill6/fact.html

Poetry

Fun riddles that rhyme
http://www.poetryteachers.com/poetryfun/rhymetime/riddles.html

Poetry Theater
http://www.poetryteachers.com/poetrytheater/theater.html

Giggle Poetry
http://www.gigglepoetry.com/

Poetry games
http://www.poetry4kids.com/games

Possessive Nouns

Let's go cave exploring!
http://www.harcourtschool.com/activity/exploring_possessives/index.html

A possessive quiz
http://www.english-zone.com/spelling/poss2.html