Education.com
Education.com: L.4.5.c Worksheets: Show Understanding With Synonyms and Antonyms
[Free Registration/Login Required] A site with links to 24 worksheets that can be downloaded and printed for student use while building skills with standard L.4.5.C: Demonstrate understanding of words by relating them to their opposites...
Florida Center for Reading Research
Florida Center for Reading Research: Word Knowledge: Opposites Attract
A lesson plan in which young scholars play a card game by matching synonym and antonym cards. Materials are included.