I've been using these word wall cards for roots and affixes in my classroom for years. It started a few school years ago, when I made cards for roots that my students encountered in my literacy and drawing classes. Over the years, I've added cards for science, math, and social studies teachers, too. This summer I had a chance to add even more, reorganize and color code them. There are over 240 cards in the set, covering all the common Greek, Latin and Anglo-Saxon prefixes, roots, and suffixes.