MindWare's 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. Set up multiple entry points to create an exciting Marble Run. These durable plastic pieces will not easily break and interlock firmly to help support a more sturdy build. Assembly is easy: Simply slide each cylinder end into the next piece. If you 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.