I'm surprised that she doesn't have any multiple choice test experience. It's possible that we live in an unusually test-heavy area, but my 3rd grade DD has had 2 rounds of multi-day standardized multiple choice testing already this year. Plus they do mini multiple choice tests every week as part of their regular classwork.

If the issue isn't multiple choice tests in general, but the EXPLORE in particular, I'd go with http://www.amazon.com/EXPLORE-Exam-Secrets-Study-Guide/dp/B003ZTN4M4