Sam—a.k.a. "Captain Invincible"—and his trusty space pooch Comet have their hands and paws full trying to navigate through the universe. Meteor showers, flying saucers, and a "galactic beast" are some of the dangers lurking among the stars. They have to push the right button—the cube, pyramid, cylinder, cone, sphere or rectangular prism—in order to land safely in…Sam's bedroom! Recognizing and classifying three-dimensional shapes is an important part of geometry. Used with permission from Stuart J. Murphy.