Stimulate developing minds and channel their creativity with this Geomag Magnetic Construction Set. Your little engineer-in-the-making can build architecturally sound structures like a bridge using panels, magnetic rods, and non-magnetic steel balls. Or, with a little imagination, they can build something more fantastical and abstract. 50-piece magnetic construction set allow children to connect and build amazing creations using assorted panels, magnetic rods, and non-magnetic steel balls. STEM toy is designed to help children of all ages develop hand/eye coordination, motor skills, problem solving, and visualization through the science of magnetic construction. This set includes 12 lime green magnetic rods, 9 non-magnetic stel spheres,8 triangle panels, 2 square panels, 1 pentagon panel. Winner of 2018 STEM Certification from STEM.org. Complies with the most rigorous European and international safety standards. Suitable for ages 5 and up. WARNING: CHOKING HAZARD -- Small parts. Not for children under 3 yrs.