A Drop of Mercy: The Water Cycle draws the attention of young inquisitive minds to one of the great blessings of Allah, Water which has numerous uses for us. It traces in a simple and easy to understand language scientific information, the journey of Water and how it originates and passes through several phases before it reaches us for meeting our needs. Pages: 32, Age: 5 . The book includes some recommended activities which are beneficial for class situations. It is also accompanied by a WALL POSTER designed to show the water cycle in greater detail.