Steve Norman compiled a list of 100 English words that Spanish and Catalan speakers commonly mispronounce. He shares activities teachers can use with students to help them practice pronouncing the problematic words correctly, such as having students decode phonetic transcriptions, define words, tell stories using words from the list, and play games where they identify words based on stress patterns or syllables. The goal is to make students aware of potential pronunciation problems and to help them overcome issues through regular practice with the list of mispronounced words.