Here is a useful set of high frequency Greek and Latin prefixes, roots, and suffixes flashcards, activities, and a whole-class diagnostic assessment.
Activities include Sight Crossword Syllables, Prefix and Suffix Sort, Affix Challenge, Speed Racer, Affix Say and Write, For the Record, Affix Highlights, Torture the Teacher, and Affix Blanks. Also get example words for syllable blending practice and a Greek and Latin word parts worksheet.
These reading resources are components of Mark Pennington's comprehensive Teaching Reading Strategies curriculum-available here on TpT. Check out Teaching Teaching Reading Strategies
for quality RTI and reading intervention resources.