1. Quia Synonym and Antonym Jeopardy Game
www.quia.com/cb/213396.html
2. Brain Bop Synyonyms
jr.brainpop.com/readingandwriting/word/synonymsandantonyms/scrollingbackground/
3. Between the Lions Sam's Synonym Lab
pbskids.org/lions/games/synsam.html
pbskids.org/lions/games/synsam.html