This is Dave's Down To Earth Rock Shop, the book! It is written by Stuart J. Murphy and illustrated by Cat Bowman Smith. 

Josh and Amy need to organize their rock collection-- but how? As they figure it out, readers will learn the math skill of classifying-- putting objects into groups by attributes like color, shape, or size. 

This is a MathStart book. Visit MathSmart today!

Dave's Down to Earth Rock Shop carries the Carnegie Collection of Dinosaur replicas! Click here to learn more!

The Dinosaurs of China Collection! Click here to learn more!

The Missing Links Collection! Click here to learn more!

Dave's Rock Shop carries all four of the "Eyewitness Books" dedicated to rocks, minerals, fossils, dinosaurs, and gems. We have Rocks & Minerals, Fossil, Dinosaur, and Crystal and Gem.

This is a great educational tool for children. It is safe, fun, and easy for children to do, and is a great group project! This is also perfect for parent/child bonding!

The T-rex's neck lunges... the jaw clamps... the teeth snap! What more can anyone ask for in a dinosaur toy?