Wooden Marble Run 52 PiecesThe Wooden Marble Run 52 Pieces is an exciting construction set that combines creativity, problem solving, and hands on learning in a dynamic way. Made from high quality, smooth finished wood, this set includes 52 interlocking blocks, tracks, and accessories that allow children to design and build their very own marble runs. As they experiment with different layouts, children explore concepts such as gravity, motion, cause and effect, and sequencing,