Defined as the difference between what a child can do with and without guidance, FTP, identify this most important construct of Lev Vygotsky.
Tharp and Gallimore developed a four-stage model of this concept to show how children develop speech and language.  This concept was last mentioned in its creator's 1934 Thinking and Speech, where it emphasizes instruction and its role in higher mental functions that are characterized by awareness and volition.  It was first presented as an assessment of a child's intellectual ability and took on a more dynamic definition of potential than IQ.  Defined as the difference between what a child can do with and without guidance, FTP, identify this most important construct of Lev Vygotsky.
Tharp and Gallimore developed a four-stage model of this concept to show how children develop speech and language.  
zone of proximal development