Build a compass with a ball bearing driven by the invisible forces of magnetic attraction and repulsion Create a non-contact transmission system using the magnetic forces of attraction and repulsion Learn the basics of magnetism and use them to create controlled magnetic reactions. Stimulates creativity, imagination and intellect The Geomag series, winner of numerous awards, helpd children of all ages to develop imagination and curiosity through the science of magnetic constructions Suitable for children aged 7 years old and above. Consisting of 35 pieces Each construction set can be combined with the rest of the Mechanics Gravity product line. The "Easy Combo" system allows you to build different models and connect them within just 3 moves, Manufacturer: Geomagworld