What is a root word? What is a prefix? Suffix? Use these questions to spark a discussion amongst your language art learners. Then, start by writing the word irresistible on the board and have teams of learners attempt to create new words by adding prefixes or suffixes. Model a think-aloud strategy to show learners how to create new words, and then provide them with a list of words to play with. You'll have to prepare the list of words, as none are included here.