I've been using Quia to help my students learn vocabulary, both translations and spelling. The games are a great way for kids to have fun learning vocabulary and the quizzes give them an immediate feel for how well they are learning. My kids love it and I'm seeing a definite improvement in their retention of the material.
Lisa Welch, 5th through 7th grade foreign language teacher, Wheeling, West Virginia, U.S.A.