The Frizs class is tracking a mineral mysterythis trips a gem! When Carlos brings a mystery rock to school, he hopes Ms. Frizzle will tell him what kind of rock it is. But the Friz doesnt like to tell when she can show....Thats how the class ends up on a wild rock hunt in the Wild West, trying to solve a mineral mystery! They take a stagecoach ride, pan for precious gems, and even explore an old mine. Sure, the going gets a little rough at timesbut this road trip rocks!
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