1. A kit for use in performing learning activities, said kit comprising a three or more manipulator devices each having at least two attributes identifiable by children and allowing said children to associate said plurality of devices into subsets according to shared types of said attributes, and wherein one of said attributes is a manipulator attribute such that each one of said devices may be manipulated from one state to another state, and wherein at least a first one of said devices is adapted to be manipulated in an identifiably different manner from at least a second one of said devices such that said children can distinguish said first one from said second one based upon said manipulator attribute.