Combine interlocking chutes, bridges, spinning wheels, and quintessential funnels to create an interactive marble run that will captivate students’ attention for hours! Students will experiment with trial and error as they guess which way the marble will go and become acquainted with basic laws of physics as it spirals through the multi-layered construction. Fun and experimental learning never ends as students construct limitless variations with the same pieces, improving design and construction skills. Includes over 80 pieces. Recommended for Elementary and up. CHOKING HAZARD (1). Not for under 3 yrs.