Math:
http://www.mrnussbaum.com/mathcode.htm
English Language Arts
http://www.mrnussbaum.com/langcode.htm
Apostrophes (including Possesive Nouns):
http://owlet.letu.edu/grammarlinks/punctuation/punct3.html
Cause and Effect
http://www.studyzone.org/testprep/ela4/a/hp/causeeffect.htm
http://www.hbschool.com/activity/trophies/rsr/build1/RR_e_4_4.htm
Conjunction
http://www.funenglishgames.com/grammargames/conjunction.html
Commas
http://www.primaryresources.co.uk/english/powerpoints/JW_commas.swf
Critical Reader
http://www.tv411.org/lessons/cfm/reading.cfm?str=reading&num=11&act=2&que=1
Reviewing and Editting
http://www.missmaggie.org/scholastic/editdan_eng_launcher.html
Hononyms
http://www.wisc-online.com/Search.aspx?search=homonym
FunBrain - Homonyms
http://www.funbrain.com/whichword/index.htm
Inferencing
http://www.philtulga.com/Riddles.html
http://www.sadlier-oxford.com/phonics/5_6/cows/cows.htm
http://www.quia.com/ba/41785.html
http://www.tv411.org/lessons/cfm/reading.cfm?str=reading&num=4&act=2&que=1
Possessive Nouns:
WISC Possessive Nouns
http://www.wisc-online.com/objects/ViewObject.aspx?ID=WCN1601
Harcourt Go for Gold
http://www.harcourtschool.com/activity/language_arts/goforgold/grade4.html
Harcourt Grammar Park
http://www.harcourtschool.com/menus/language_arts/grammar_park_g4.html
Predicting
http://www.tv411.org/lessons/cfm/reading.cfm?str=reading&num=11&act=3&que=1
Verb Tenses
LEO: Literacy Education Online
http://leo.stcloudstate.edu/grammar/tenses.html
Verb Tense Online Jeapordy Type Game
http://eslgamesworld.com/members/games/ClassroomGames/Quizshow/Verb%20Tenses%20Past,%20Future,%20Perfect%20Present/index.html
English Verb Tense Exercise
http://www.e-grammar.org/
Fun Brain- Verbs
http://www.funbrain.com/verb/index.html
English Page - Verb Tense Intro
http://www.englishpage.com/verbpage/verbtenseintro.html
Arcademic Skill Builders - Verb Viper
http://media.arcademicskillbuilders.com/games/viper/viper.swf?0
Soft Schools - Verb Balloon Game http://www.softschools.com/language_arts/grammar/verb/balloon_game/
Vocabulary Games:
http://www.vocabulary.co.il/
General:
http://www.bbc.co.uk/skillswise/topic-group/word-grammar
Science:
Animals:
National Geographic
http://animals.nationalgeographic.com/animals/
ZooBooks
http://www.zoobooks.com/animalsatoz.aspx
Switcheroozoo
http://www.switcheroozoo.com/animallist.htm
Animal Planet
http://animal.discovery.com/animals/wild-animal-guides.html
Inherited Traits
http://learn.genetics.utah.edu/content/begin/traits/activities/pdfs/Inherited%20Human%20Traits%20Quick%20Reference_Public.pdf
http://www.biologyjunction.com/genetic_traits_activity.htm
Planets
Fact Monster: Planets
http://sf.factmonster.com/ipka/A0909527.html
ThinkQuest Planets
http://library.thinkquest.org/20104/planets.htm
Kids Astronomy
http://www.kidsastronomy.com/solar_system.htm
Astronomy for Kids
http://www.dustbunny.com/afk/planets/
SeaSky
http://www.seasky.org/solar-system/solar-system.html
Water Cycle
http://apps.southeastwater.com.au/games/education_kidsroom_wcactivity.asp
Simple Graphic
http://studyjams.scholastic.com/studyjams/jams/science/ecosystems/water-cycle.htm
Study Jam- Video and Quiz
Social Studies
Soil
http://www.kidsgeo.com/geology-for-kids/0002-the-earths-soil.php
Winter Holiday Links