A magic spell goes wrong--and things start getting STINKY! This series is part of Scholastic''s early chapter book line called Branches, which is aimed at newly independent readers. With easy-to-read text, high-interest content, fast-paced plots, and illustrations on every page, these books will boost reading confidence and stamina. Branches books help readers grow!Beatrix wins the Science Fair every year--because she uses magic to cheat! But Olive really wants to win this year, and she has the best science project EVER. Then something bad happens! The sisters'' projects turn into a super-stinky, super-moldy blob monster! The blob is ALIVE and growing bigger and smellier by the minute! Can Olive and Beatrix stop the blob before it swallows up the school?