English dictionary for kids with optional Spanish support. Includes audio pronunciations, part of speech, and inflections.
Related: http://kids.wordsmyth.net/wild/ is a highly visual dictionary, where students can click through scenes and images to find the written and spoken forms of nouns.
Gus on the Go is the language learning app that you should look for. It is a wonderful learning tool that helps you teach your child the vocabulary of a spoken language.
The animated series Peep and the Big Wide World gives wings to the innovative idea of teaching science to preschoolers. Wry and distinctive visual humor, charming plotlines, and lovable characters combine with a comprehensive science program to attract and engage kids three to five years old.