Title rated 3.9 out of 5 stars, based on 8 ratings(8 ratings)
Book, 2014
Current format, Book, 2014, 1st ed. --, Available .
Book, 2014
Current format, Book, 2014, 1st ed. --, Available . Offered in 0 more formats
Ruby is determined to win the gold with her fifth-grade science fair project, a Rube Goldberg machine to help her grandfather, but the real prize turns out to be something completely unexpected.
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