The Federal Wage System (FWS) was developed to make the pay of Federal blue-collar workers comparable to prevailing private sector rates in each local wage area. Before the FWS, there was no central authority to establish wage equity for Federal trade, craft, and laboring employees.
 Zone of proximal development  (ZPD) is Vygotskyâs term for the range of tasks that a child is in the process of learning to complete. The lower limit of ZPD is the level of skill reached by the child working independently (also referred to as the childâs actual developmental level).ygotsky also posited a concept of the zone of proximal development, often understood to refer to the way in which the acquisition of new knowledge is dependent on previous learning, as well as the availability of instruction. During his lifetime Vygotsky's theories were controversial within the Soviet Union.
Vygotsky's theory is complementary to Bandura's work on social learning and a key component of situated learning theory as well. Because Vygotsky's focus was on cognitive development, it is interesting to compare his views with those a constructivist (Bruner) and a genetic epistemologist (Piaget). Application. This is a general theory of cognitive development.