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by Wendy Lichtman
When mysterious mathematical equations start appearing as graffiti on the walls of her school, sixth-grader Mariana discovers a secret world of hidden messages and clever puzzles. Through her quest to uncover who's behind the messages and what they mean, she learns about creativity, problem-solving, and standing up for what's right—even when it's complicated. This unique blend of mystery, math, and meaningful choices will captivate kids who love puzzles and stories about doing the right thing.
Scholastic
216
9780545242974
2010-01-01
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