Vygotsky’s Zone of Proximal Development & Scaffolded Literacy

Although not updated since 2011, this site from Dr. Olenka S.E. Bilash at the University of Alberta, Edmonton, AB, Canada, is an outstanding resource for  improving teaching and learning, and improving second language education.

https://sites.educ.ualberta.ca/staff/olenka.bilash/Best%20of%20Bilash/vygotsky.html

Scroll down to see an example of how the ZPD might relate to the development of reading.  Note the scaffolding/Gradual Release of Responsibility labels running across the bottom of chart.