PLACE VALUE worksheets (mostly GRADE 4 REVIEW) http://www.superteacherworksheets.com/place-value.html
MATH-
PERIMETER Fun Brain- http://www.funbrain.com/cgi-bin/poly.cgi
TOON UNIVERSITY http://www.toonuniversity.com/flash.asp?err=503&engine=15
MR NUSS BAUM http://www.mrnussbaum.com/placevaluepirates2.htm
FUN BRAIN http://www.funbrain.com/
A PLUS MATH http://www.aplusmath.com/
AAA MATH http://www.aaamath.com/
MATH FACT CAFE http://www.mathfactcafe.com/home
LEARNING PLANET http://www.learningplanet.com/
NOGGIN http://www.noggin.com/games/index.php
KIDS DISCOVER http://www.kids.discovery.com/games/games.html
MATH IS FUN http://www.mathisfun.com/
CURRENT EVENTS
Smithsonian http://www.smithsonianmag.com/?source=kidscastle.si.edu
NASA http://www.nasa.gov/audience/forkids/kidsclub/flash/index.html
Weekly Reader http://www.weeklyreader.com/subcategory/74
Scholastic News: http://www2.scholastic.com
Time for Kids http://www.timeforkids.com/TFK/kids/news
Science News for Kids http://www.sciencenewsforkids.org/
Dogo http://www.dogonews.com/
News 4 Kids http://jc-schools.net/tutorials/student-news/
Sports Illustrated http://www.sikids.com/
Student News Net http://www.studentnewsnet.com/