After Keesha discovers mold on her sandwich, Ms. Frizzle and the class embark on a grand adventure into the mini microbe world where they discover that these tiny creatures have a big effect. Original.
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Joanna Cole and Bruce Degen, the author and illustrator of the Magic School Bus books, have collaborated for twenty years, bringing humor and true kidlike curiosity to science and learning. Booklist heralded Ms. Frizzle as "the wackiest, wisest teacher in picture books." Two MSB titles have been named School Library Journal Best Books of the Year, and they have won countless state book awards, from New York to Nebraska.
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