This could be a fun poster to have posted somewhere in a classroom. You could have students learn to say hello in different languages and have them practice these skills as they enter the classroom in the mornings (make it part of the morning routine-just change language greeting for the day).
Learn the Power of “Hello” in Various Languages at
100 Ways to Say, "Great!" Infographic – "Everyone likes to hear that they or something they've done is great. But great can get old cliched, musty. If you want to praise someone enthusiastically, try one of these alternatives." – WriteAtHome