This lesson contains 150 prefixes, suffixes and roots that students should learn to help them decode new words. There are 10 units with 15 stems each. There is a unit test for each unit and also a review test for units 1-3, units 4-6 and units 7-9. There is a multiple choice test that I would use as a pre and post test but it could be used as just a cumulative test. For each unit the students should fill out the attached worksheet. I have also included suggestions for fun and interactive activities to do with each unit. For pacing the unit, I go slowly. I give the students two weeks for each unit and one week for each review test. Therefore, this packet will take 24 weeks. I created the unit for 10 graders but it would clearly work for older and younger students.