This activity involves changing the angle of a ramp to affect the distance that an object will roll. Make a ramp by taping a paper towel tube to a block and let children investigate by rolling various objects down their ramps. After a while, provide additional blocks and encourage children to vary the steepness of their ramp. After they test objects on the steeper ramp, ask children to describe the differences they observed. A materials list, internet resources, standards, and safety practices are provided. This book selection also includes the Table of Contents, Preface, About the Editors, Introduction, Simple Graphing for Young Children, Science Teaching Boards and Boxes, Basic Materials List, and Index.