If you have noticed an incorrect price, image or just something you'd like to tell us, enter it below. Please include your email address if you'd like a reply.
Matt, Bibi, and their dog Riley crawled through the tiny opening first. FWUMP! A secret door suddenly closed behind them . . . The Zills family is summoned to Egypt to help find the hidden burial chamber of an ancient pharaoh. But when Matt and Bibi get trapped in the pharaoh's pyramid, they stumble upon an even bigger mystery. With only each other, their dog Riley, and the geometric hieroglyphics on the walls to help them, the twins must use their math skills to locate the burial chamber--and the way out. Luckily, Matt and Bibi know their stuff when it comes to geometric solids, and so will the readers of this adventure in math!
Booko is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more
Historical Prices
Loading...
This graph is for informational purposes only. Occasionally pricing data is captured incorrectly, through bugs in Booko or the stores supplying data, which may distort the graph, providing undue hope that even lower prices sometimes appear.