This children book series in "HOW" include a total of four books. "How Fast", "How Deep", "How heavy" and "How tall". This book describe something about the world we are living. Let our children to understand something about something under the ground and how animals and plants can go under. This book is designed for very young kids and are intend to educate our children in an easy understanding format.

Colorful, Fun and Interesting for young kids 3+

More important it is ***FREE*** in the promotional period. Download it now before it sold out.