MindWare's Mega Marble Run keeps attention spans rolling. Ready to roll? This marble run is designed to let you invent dozens of whirling, spinning paths for your marbles. This Marble Run from MindWare teaches logic, creative play, basic physics, fine motor and problem solving skills. These durable plastic pieces will not easily break and interlock firmly to help support a sturdier build. Assembly is easy: Simply slide each cylinder end into the next piece. If your column gets too tall, you might want to add one of the marble-catching feet or brace it with a second column attached by a slide connector.