Kirkus (Kirkus Reviews, September 15, 2006 (Vol. 74, No. 18))
Sierra spins an impeccably rhymed yarn about a last minute science-fair experiment gone fabulously amok. As a bespectacled girl narrates, her classmates' projects go swimmingly while she's blocked: "The ants on Mary's ant farm were growing corn and peas, / And Kevin Fink was on the brink of curing a disease." Surfing the Internet, she sends for "Professor Swami's Super Slime," ("A mutant yeast with just a piece of dragon DNA,") that arrives in an oozing carton plastered with warnings. Naturally, the stuff morphs. Sensitized to the slightest rebuff, it swallows the hissing Sir Scratchalot, kid sister Kate and Dad before chasing the narrator to school. It ingests Miss Fidget and several third-graders before the budding scientist remembers a crucial detail: fed sugar, the slime will swell amazingly, then erupt into a harmless gas. The kids lob a barrage of treats into the gaping maw, with-apparently-the guaranteed results. Gammell's pictures perfectly capture the antics, exploiting runny watercolor and highly rendered colored pencil to depict the outrageous mutations. Explosively funny. 2006, Simon & Schuster, 32p, $16.95. Category: Picture book. Ages 5 to 8. Starred Review. © 2006 Kirkus Reviews/VNU eMedia, Inc. All rights reserved.

Caroline Geck (Library Media Connection, February 2007)
Award-winning children's author Judy Sierra and gifted and award-winning illustrator Stephen Gammell create a gripping, larger-than-life tale of a young schoolgirl's science fair project fiasco told through rhymes. Miranda must create an impressive project to rival her schoolmates' endeavors. Recognizing that she has no project idea, and that she must meet a deadline, Miranda resorts to the Internet and purchases her intended project, Super Slime. The slime immediately turns into a blob-like entity reminiscent of 1950s horror movies. The monster engulfs its victims, and then they disappear. First Miranda's cat disappears, then her baby sister, and then other nearby living things. Gammell's amorphous slime, composed of wild strokes, swirls, and splatters, makes the creature seem even more horrific. When Miranda realizes that the slime can be destroyed with sugar, she shakes a soda can and douses the slime with the sugary blast. The slime is obliterated, and her sister and other living things reappear. Due to the text's deliciously scary moments, this wonderful and hilarious picture book is best suited for youngsters in first grade and higher. The book also addresses important modern age topics, such as the Internet and product labeling deception. Highly Recommended. 2006, Simon & Schuster, 32pp., $16.95 hc. Ages 6 to 11.