Drop a coin onto the launching pad and spin the Vortx unit in a circular motion. This creates an immense amount of speed causing the coin to spin around and around until it finally drops to the bottom storage area.

"The longest continuous rolling so far is 33 hours, 16 minutes."

Challenge your skills, spin the coin back up the tunnel or spin it upside down, plus more. Instructions include a simple explanation of how it works and leads the reader into a quest for more knowledge of physics and mathematics.