This tool, Bluster from McGraw Hill, offers many different ways for kids to interact while playing in competition, in team or alone. They learn about advanced phonics through rhymes. Meanings of words are emphasized by finding synonyms from a list of words that are displayed for both sides. Teachers especially like the team play version because the kids are using the ipad in an interactive way to solve the problem. The human does not get lost in the process so to speak. Kids up to 7th grade love this in the ESL classroom. Please make more such games! You can Change age group to grade 4. In foreign language learning this app makes sense up to grades 7 and 8 or even nigher. As an adult I would enjoy it as well.