The book focuses on these - "Down the tree. Over the wall. Under the bridge. Around the lake." etc. - with words and illustrations. My son had a decent grasp on the concept of prepositions (he understood them when he heard them) - but after a few readings of this book, they've begun showing up in his speech.
The book is a fun one. Repeat readings, and my son still laughs at the ending.
The pictures are done mostly in shades of blue, in order to make it look like nighttime. I think they do a wonderful job of conveying the mood- the lantern gives off yellow light and adds a neat effect.
The story is told in a very, very simple way. It is told entirely in short, three word sentences, which fit the sneaky mood of the bears perfectly. The lack of elaboration draws the eye to the drawings to look for explanation there. This works amazingly well, and makes for a fun, concise book.
Loggie-log-log-log