Understanding Cycles and Systems explores the constant processes that surroundus. You will learn about everything from the movement of rocks to the changingform... » 

Understanding Cycles and Systems explores the constant processes that surroundus. You will learn about everything from the movement of rocks to the changingforms of water. You will discover how invisible elements and the Suns energyare the keys to all living things. You will also find out how all Earthsprocesses connect and work together. So come on a fantastic journey into theworld of cycles and systems SciHi is an engaging comprehensive and visuallystimulating series that takes learning science core curriculum to a whole newlevel. «