Twins Matt and Bibi accompany their scientist parents to Egypt, where they become trapped in a pharaoh's pyramid and must use geometry to escape. The math is sound, but the ostensibly instructive story is replete with stilted dialogue ("Matt, this is a clue to finding the pharaoh! Where do we start?"), and the art looks like poor-quality reproductions from cartoon cels.

Amateur archeology sleuths follow geometric clues to find a pharaoh's mummy. Matt and Bibi are the twin children of scientists invited to Egypt. First to enter the pyramid, the two are trapped inside when a secret door closes. Luckily, Bibi learned to read hieroglyphics before they left home. Along with the writing on the wall are geometric solids. The pair follows the clues leading them to count the faces on the solids. Definitely not an introductory text to geometric solids, this is more a reinforcement of the concept. The historical knowledge readers will take from this is a mix of factual and farcical. Limestone rock, papyrus scrolls and the antechamber filled with items needed for the afterlife are on target. The giant granite towers inside the pyramid and the carved wooden box that holds the pharaoh's clean underwear are not. Attempting to be both entertaining story and teaching text makes this fall a little flat and the whole premise is silly. (Picture book. 8-11)

Gr 1-4-Matt and Bibi go to Egypt with their scientist parents in search of an ancient pharaoh's mummy. When the siblings are accidentally shut in the pyramid, they decide to explore. Using hieroglyphic clues, they discover that the path to the mummy is delineated by "faces," the flat surfaces of geometric solids. As they find either pictures of solid shapes or the objects themselves, the twins count the faces of the shapes and are guided through the pyramid by relating their answers to the hieroglyphic clues. They find the mummy and a map indicating the way out. Although this book attempts to provide an introduction to solid geometry, the information is not clearly presented. The colorful impressionist cartoons depict the various shapes discussed in the text, but they are not labeled. The plot itself is a stretch: before they leave for Egypt, Bibi says she hopes to learn about hieroglyphics, but as soon as she arrives there, she is expert enough to interpret complex messages. An endnote lists some good activities to help children learn about geometric solids, but the story will leave readers more confused than enlightened. Try Stuart J. Murphy's Captain Invincible and the Space Shapes (HarperCollins, 2001) and Tana Hoban's Cubes, Cones, Cylinders, & Spheres (Greenwillow, 2000) for better introductions to this topic.-Lynda Ritterman, Atco Elementary School, Waterford, NJ Copyright 2005 Reed Business Information.