A Wealth of Math resources, K-college

http://wheresthemath.com/parents/math-help/

This is all solid, real math, not that fuzzy stuff they're teaching in so many schools.

30 Sensory activities for learning letters (or numbers)

This is structured to show the Hebrew alphabet, but the ideas would work for anything that has to be written--letters, symbols, numbers, shapes, math problems, words, etc.

http://www.scribd.com/doc/127308198/30-sensory-activities-for-learning-the-hebrew-letters-of-the-alef-bet

Free online courses that grant credit for a reasonable fee with exams

https://docs.google.com/spreadsheet/pub?key=0Anj0TVzjWlW2dE1jMC1qZU1raEQ0RG02bWlheEM0ckE&gid=0


Note: The courses are free. The exams that give you credit are not free (but these are particularly affordable).

Science crowdsourcing projects

http://www.notesfromnature.org/#/archives

Eyewitness to History

LOTS of history resources, quotes, movies, and stories: http://www.eyewitnesstohistory.com/

Search engines for free courses, texts, and learning centers online

Skilledup: This site also links to for-fee courses, so be sure you select "free" on the left sidebar.

http://courses.skilledup.com/courses?price=0

Red Hoop: http://redhoop.com/.  This also includes for-fee classes, so be sure to look for the free ones (it's clear which are free when you search).

Open Culture: http://www.openculture.com/freeonlinecourses.  Includes textbooks, movies, and a special page for children's education, among other things.

Engineering activities for elementary age

http://innerchildfun.com/2012/08/activities-for-little-engineers.html#_pg_pin=569477