Connetix magnetic tiles encourage hands-on learning through imaginative, open-ended, STEAM-based play. Each tile has magnets ultrasonically sealed inside, allowing kids to snap them together as they build 2D and 3D creations. This 24-piece pack includes rectangles that are 2, 3, and even 4 times the size of a typical Connetix square. That means kids can construct sturdier and more complex designs, taking their creations to even taller heights. Use this set on its own, or add to other Connetix sets to maximize the building fun.