"Inside, Outside, Upside Down," by Stan and Jan Berenstain, is one of the excellent "Berenstain Bears" series of children's books. This volume uses a very simple text and colorful illustrations to introduce some basic prepositions and adverbs to beginning readers.
The simple plot follows the adventure of the Bear family's young boy cub, who "stows away" in a box and gets shipped to town. This is, however, one aspect of the book of which parents should be cautious. Enjoy the book with your children, but make sure they know not to climb into and hide in strange containers--such activity might be dangerous! The hero of our book, on the other hand, suffers no ill consequences from his actions.
Overall, "Inside, Outside..." is not the best in the "Bears" series, but it is still an entertaining book with educational value. And the characteristic Berenstain artwork is always charming.