You may want to check out some of these great activities and Spanish learning games!

As always when your children use the Internet, parental supervision is recommended. 

Great websites for kids 

www.123teachme.com  Spanish for Kids | Our goal is to remain the best place to learn Spanish free online.  
Great websites for kids  www.learn4good.com  Language Learning - Spanish for Kids 
 Great websites for kids

http://www.hello-world.com/index.php

 

  Hello World - Another fun way to  practice Spanish  and other  languages too!
Online Books  www.enchantedlearning.com  Spanish language activities including short books to print. 
Games  http://www.spanish.bz/games.htm  Interactive Spanish games for students. 
More resources  http://www.uni.edu/becker/children.html  A giant list of great Spanish resources including vocabulary, games, books, and songs.