HABA Clever Up! Building Block System 3.0Welcome to HABA's Clever Up! Building System. The cubes, rectangular blocks, panels and strips make it possible to build, bridge and create inclines and levels. The cube is doubled, divided and quartered. Creative thinkers arrange patterns, structures and mosaics to make their first buildings. The pieces make it easy to compare quantities and sizes, carry out early mathematical tests or stimulate digital thinking. Building makes creative learning fun!