Math made cool

http://vihart.com/

More Starfall

This is a new site by Starfall, the best phonics site I've found so far. This time, in addition to further support on literacy, they have MATH!

I've been hoping for Starfall Math for some time, so this is really exciting.

http://more.starfall.com/

Math Art for budding computer geeks

http://p2pu.org/general/introduction-math-art

Learn programming languages

This is a relatively new endeavor, and I'm not sure how it will come out, but it's worth looking at.

http://mashable.com/2010/12/17/learn-html5-javascript-and-css-with-mozillas-free-school-of-webcraft/

Mozilla is working with Peer2Peer U in developing this. The quality of the courses will depend on the teachers, of course.

http://p2pu.org/

GREAT Math learning resource

K-everything, by level or by skill---this site pulls resources from around the web to help with math learning. Fun stuff, too.

http://www.onlinemathlearning.com/index.html

TimeMaps Interactive History Maps

This is an awesome new resource that covers all of World History in engaging, informative interactive maps and a timeline.

http://www.timemaps.com/home/

It's a new enough resource that they are still adding materials, but the Ancient Egypt page can give you an idea of what to expect--not just places and dates, but info on art, architecture, government, and (this is BIG) the legacy in the rest of history.  http://www.timemaps.com/civilization/Ancient+Egypt.

Easy to access and fun.

Fourth Grade

Here is the link to the Fourth Grade curriculum I'm using with my son this year. My son is profoundly gifted in the verbal/social studies areas, so you might find some of this perplexingly varied in its content and academic level.  I have left off math except for drills because we are using Saxon Math 54 this year.   Access it here:

http://docs.google.com/View?id=ddssdqrh_15752xgxhg9

Digital claymation

http://nfbkids.ca/handson/html/en/fu/clay.html

Online Audio Lectures on American History

http://teachingamericanhistory.org/library/audio.asp

Teaching Gems--links to over a thousand interactives

http://www.teaching-gems.com/

Fantastic portal to educational content

http://www.thinkfinity.org/

Illustrating Books

http://www.sil.si.edu/exhibitions/PicturingWords/PW_explore.htm

FANTASTIC library of dinosaur materials online

http://www.guidetoonlineschools.com/library/dinosaurs

Really fun stuff here, and very accessible with a summary of the links.

Math Challenges for Families

Fun site!

http://www.figurethis.org/index.html

Fun, visually appealing elementary physical science materials

http://www.nationalgrideducation.com/teachers/about.php

Free online courses from around the world

World Lecture Hall

http://wlh.webhost.utexas.edu/

Courses on Physics

http://hyperphysics.phy-astr.gsu.edu/hbase/HFrame.html

http://www.physicsclassroom.com/

K-8: http://www.thephysicsfront.org/static/topic.cfm?course=1

Conceptual: http://www.thephysicsfront.org/static/topic.cfm?course=3

http://www.hippocampus.org/Physics;jsessionid=278824950B833949E194E99D22BC8DB1

http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewiTunesUCollection?id=341599922#ls=1

http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewiTunesUCollection?id=341599916#ls=1
Click on "more from this provider" for more physics courses.

self-directed exploration: http://www.compadre.org/informal/search/browse.cfm?browse=gsss

And textbooks:
http://www.motionmountain.net/
http://www.ngfl-cymru.org.uk/vtc/2008-09/physics/ph1/basic_physics/free_high_school_science_text.pdf

And labs: http://websites.kahoks.org/Richert_Gary/sciweb/applets.html

Entire course on Mass Communication

http://www.cybercollege.com/frtv/frtv_ind.htm

Course on TV Production

http://www.cybercollege.com/tvp_ind2.htm

Cooking Conversion Calculators

There are a lot of great education resources coming out of the UK right now, including cooking lessons for kids. To make them really useful, though, you need to convert the measurements:

http://www.dianasdesserts.com/index.cfm/fuseaction/tools.measures/Measures.cfm  has conversion calculators and measurement.