To review vocabulary in any subject, take strips of masking tape and tape them to a rectangular sponge. Use a marker to write the vocabulary words on the tape. Have the students toss the sponge around the room to other students. The words that get chosen can depend on which finger is touching a particular part of the sponge. For example, if a student's left finger lands on a specific word that is the word they must try to define. Students love this game. If there are more than six vocabulary words, just tape over already defined words and write the new words on top.