Funschool.com

Online Activities: Max’s Math Adventures

Funbrain has math, reading and grammar games 

AAAmath.com has drills for math K-8

Little Explorers Picture Dictionary with Links (includes Spanish/English resources)

The Internet Picture Dictionary includes English, French, German, Italian and  Spanish words

Little Animals Activity Center  has math, reading,  music and other activities.

Global Story Train
Global Story Train is an online, illustrated, collaborative story project that encourages kids from all nations to work together in writing and illustrating communal stories. Each completed story train comprises three cars -- a beginning, middle and end -- all written and illustrated by different kids.

CoolMath4Kids has many math activities. 

Wacky Web Tales (mad-libs) allows students to practice parts of speech.

Brain Pop Movies have movies on health, science and technology, as well as a quiz on each movie ( registration necessary - don't use more than two per day per school)

Boowa and Kwala has games, songs, interactive coloring books. This site is available in English, French and Spanish.

Mo Jo's Musical Mouseum Song Lyrics