This unit can be used for Kindergarten through FifthGrade to review synonyms and antonyms. Each student can make his/her own book of by cutting and pasting the correct owl synonym or antonym on the correct tree. This unit can be used as a review or as an assessment. The unit has a synonym and antonym list for K-1, 2-3, and 4-5. Lists can be used to differentiate for each grade level.