Free ball by 梁淑怡 from china

Children are a creative group.When the crayon as a medium of children's expression, the traditional caryons is too limit children's creativity.“Free balls” has six forms of polyhedron,each stereo is composed of three primary-color.Color can be used alone and also can be mixed use.Children will unconsciously use the boundary between the two colors,come out some mixed colors,they'll be surprised to find the rule of color and creative to use it. The shape of the block is easy to hold for childrens.