Voki-classroom--new features. but avatar creation with voice remains the same. Teachers can manages students (no longer have to join individually). Just announced (5/31/11), though I am unable to determine the cost. Keep an eye on this.
Very sensible technology integration matrix (entry, adoption, adaptation, infusion, transformation)--helpful in context of Common Core State Standards, which require digital literacy.
Royalty Free Music--too often I have paid for music so that I don't break copyrighting. Here's a simple source for music with easy attribution. Recommend.
This app ($1.99) will pronounce any word that is typed in on a qwerty keyboard (color coded qwerty available for younger children). Assuming kids can type in a word accurately, this could be very helpful. For iPhone, iPod touch or iPad. Think of it as an e-reader for unknown words...would be very helpful to ELLs and students with word recognition difficulties because it pronounces the word.
Phonetic word speller--put in phonetic spelling and word is correctly spelled. App ($4.99) for iPad, iPhone, iPod touch...would be helpful for persons with spelling issues, especially those with learning disabilities in spelling.
Wish it was for android.