Share your thoughts, and offer opinions in this interactive math journal. Answer puzzles and equations alongside Sage and Isabel as their adventures come to life in stunning detail. You can write, draw, and paint inside. Just make sure you don't leave any pages blank. As always, remember to protect this book at all costs. Some secrets are only safe between friends. And don't forget to check out the companion novel Sage Carrington, Math Mystery in Mexico City to complete your collection
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