Dictionary.com

Price: Free! (w/ads) or $4.99 - iPad, $2.99 iPod (ad-free)
Grade Recommendation: 3rd and up
Subject: All
Specific Skill: Reference
Levels: N/A
Players: N/A
For iPad, iPod, or Both: Both

This is another option for a decent dictionary app for the iPod Touches and/or iPads in your classroom. I still encourage teachers to keep 'real' dictionaries (at the appropriate level) in classrooms, but students should also have access to the electronic kind - it's part of their future (like it or not).

While I prefer the dictionary app by Merriam-Webster, others may like this app better.

Students can search for a word by entering text or using the 'voice search' option. I love this option because if kids are using an app like this in the first place, chances are they do not know how to spell the word. Search results include all meanings of the word and what type of word it is (adverb, noun, pronoun, etc.). Synonyms also appear along the right side of the app or users can hit the synonyms button to see them in isolation.

The user has the ability to store favorite words and see recent words that have been looked up. In addition, the main page of the app features a 'Word of the Day' in English and Spanish.