Spanish
International Children's Digital Library
An online collection of scanned picture books and children's chapter books, available for free browsing and reading. Includes books in many languages (Farsi, Arabic, Spanish, , and has some "exhibitions" with themes and lesson plans. The books are beautifully scanned copies and a mix of old favorites and books that are new to me. The collection can be searched by the age range for which it is most appropriate, theme, book length, character-type (i.e. kids, animals, fantasy characters...).
BBC Primary School Languages: French, Spanish & Welsh
The BBC has fun resources to help elementary aged kids learn French, Spanish and Welsh. These are the first free resources I've found that go beyond the absolute basics (i.e. colors, numbers, and a couple phrases) while remaining fun and appropriate for younger kids.
"Destinos: An Introduction to Spanish" A free video course for high school
A description from the site:
Mexico for Kids
History, Government, Explore, Biodiversity, Games, About Mexico, Geography, News