Hape Toys, Quadrilla Autobahn, is an exciting way for a child (ages 4+) to learn about physics! Teachers or parents can use this educational toy to introduce or reinforce a student's understanding of potential energy, kinetic energy, gravity and levers. The marble tracks are made with the highest quality materials and demonstrate a mastery of design. Many manufacturers have created products similiar to Hape's Autobahn, but the wood design and natural colors put it a notch above the rest. The first thing my child said after opening the box was, "It smells like wood!" He was very excited to get started. Although a couple images were tough to follow, overall the first design didn't take more than 15 minutes before we were mesmerized by the marble traveling down our work of art. I'd highly recommend this product not only for its educational purposes, but for its top notch craftsmanship and design. Well done, Hape!