Lev was born in 1896 and Died in 1934
Lev thought that many kids' thinking is affected by their knowledge of social interaction.
- Zone of proximal development (ZPD)
-Level 1: 'Present Level of Development' shows what the child knows without help of others.
-Level 2: ' Potential level of development' shows what the child could be capable of with the help of other people
- Scaffolding: When an adult gives support to a child they adjust it depending on the child's progression.