Students review the 20 most common prefixes in this fun vocabulary game that improves their language and reading skills. The prefixes used in this game are as follows: un, re, im, dis, en, non, in, over, mis, sub, pre, inter, fore, de, trans, super, semi, anti, mid, under. In rounds one and two, students define the prefixes and write examples. In round three, students use the prefixes to define the words and write synonyms. In round four, students select prefixes and root words to write words th