Texas Essential Knowledge and Skills (TEKS) http://www.tea.state.tx.us/teks

The World Factbook - The CIA World Fact Book is a collection of facts of primarily geographical, economic and sociological nature about the countries and territories of the world.
http://www.odci.gov/cia/publications/factbook/index.html

A to Z Teacher Stuff
http://www.atozteacherstuff.com

Ask Eric:  Education Information Systems
http://ericir.syr.edu

Berit's Best Sites for Children
http://www.beritsbest.com/

Billy Bear for Kids
http://www.billybear4kids.com

Busy Teacher's Web Site K-12
http://www.ceismc.gatech.edu/busyt

CyberGuides:  Teacher Guides and Student Activities
http://www.sdcoe.k12.ca.us/score/cyberguide.html

Dan's Wild Weather Page
http://www.wildwildweather.com/

EduHound - Everything on the Web for Education K-12! Includes an alphabetical index, category index by subject, lesson plan idea links, and a feature for building online worksheets.
http://www.eduhound.com

Family Games
http://www.familygames.com

Going to a Museum:  A Teacher's Guide
http://curry.edschool.virginia.edu/curry/class/Museums/Teacher_Guide/

Kid Crosswords and other Puzzles
http://www.kidcrosswords.com

Lesson Ideas from TeachNet
http://www.teachnet.com/lesson.html

Lesson Plan Resources - Jim Hirsch's guide to using online lesson plans
http://k-12.pisd.edu/lesson.htm

Little Explorers: Picture Dictionary format to link to over 400 carefully chosen educational activities for kids.
http://www.EnchantedLearning.com/Dictionary.html

OH! Kids - Science Fair Project Resources
http://www.oplin.lib.oh.us/products/oks/SUBJECTS/scifair.html

Public Broadcasting Service
http://www.pbs.org

Safe Kids Online - collection of resources of Online Safety Guidelines
http://www.safekids.com

Teachers Helping Teachers
http://www.pacificnet.net/~mandel/index.html

TENET - The Texas Educational Network
http://www.tenet.edu

Texas Education Agency (TEA)
http://www.tea.state.tx.us

The AskERIC Lesson Plan Collection
http://ericir.syr.edu/Virtual/Lessons

The Idea Box - Early Childhood Education and Activity Resources
http://www.theideabox.com

The Magic School Bus
http://scholastic.com/MagicSchoolBus/home.htm

The Weekly Reader
http://www.weeklyreader.com/index.html