National Geographic Magnetic Marble Run with Metal Board

DESIGN, BUILD, TEST, REPEAT - This wildly creative building toy comes with 100 pieces for infinite possibilities! Includes magnetic board, 67 tracks & connectors, 11 trick pieces, 20 marbles, and storage bag. Watch the video to see them in action! OUR MOST EXCITING MARBLE RUN YET - This patented magnetic marble run is an innovative engineering kit with endless creative options. Move the pieces around to adjust, add new pathways or build obstacles. Each track and trick has its own unique properties! BUILD ON ANY MAGNETIC SURFACE - This STEM marble maze for kids and adults can be built on any magnetic surface like refrigerators, lockers, whiteboards, workbenches, file cabinets & more! THINK LIKE AN ENGINEER - The secure snap-fit connectors eliminate frustration to keep you creative, with detailed instructions and a learning guide that teaches about physics and engineering!