I have to say, I was pleasantly surprised by the vocabulary and educational factor in this book. The books are simply written so I understand why my students like them. Silly and irreverent, the authors bring lightness while providing information for students that may be outside of their normal surroundings. In The Karate Mouse, Geronimo is exposed to the Japanese martial art of karate. The book explains the background and philosophy of karate and provides a wonderful vocabulary to go with it. Great!