This is a COMPLETE mnemonic unit on eighty-four Greek and Latin roots that are in thousands of English words. By the time your students are finished with this unit, they will have memorized the meanings of these eighty-four common Greek and Latin roots. As a result, they will be able to figure out the meaning of thousands of English words. I made it about five years ago for 8th graders. Been using it ever since for a variety of grade levels.