Build a nearly two-foot-tall marble run, and learn all about the scientific principles behind your creation with this interactive science book and kit. This is no ordinary maker kit. It contains everything kids need to build a nearly two-foot-high working marble run, complete with wheels, ramps, stops, and drops—two marbles included. As construction begins, young engineers in training can read along in the accompanying 64-page science activity book to test theories, perform experiments, and learn all about mechanics, speed, forces, and other scientific principles that relate to their marble run. Focusing on STEM concepts in a fun and engaging way, this kit is a great option for an upcoming science fair or a quiet rainy day at home.

What does it take to make a marble run? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best marble run around!

CMH Pub 45-2-1. U.S. Army in the Cold War. Traces the activities of American military engineers from the reconstruction that began in Greece after World War II through the construction of air bases in North Africa, the massive building program in Saudi Arabia, and support for the liberation of Kuwait in 1991. The history provides a background of the present role and position of the United States in that vital region.