Greek and Latin roots study can help increase vocabulary, reading fluency and spelling. In order to support retention we take words they know and then to take this knowledge a step further by brainstorming (or often looking up words in a dictionary, online, or other resources) to dig a bit deeper. These "worksheets" are still fun and engaging for students and my intervention kiddos often ask to do "morphology" above any of the other Orton-Gillingham activities.
Including Latin Roots:
Including Greek Combing Forms: